Graphene electrodes could replace indium tin oxide for. Graphene, a material composed of oneatomthick planar sheets of sp 2 bonded carbon atoms with a twodimensional honeycomb structure, has been proposed for many applications due to its remarkable electronic, optical, thermal, and mechanical properties. H solar cells serving as both pdoped and ndoped layers. Graphene electrodes for applications in display devices. Dyesensitized solar cells dsscs are wellknown as photovoltaic devices. Emmotta,n, antonio urbinaa,b, jenny nelsona a department of physics and grantham institute for climate change, imperial college london, london sw7 2az, united kingdom b department of electronics, technical university of cartagena, plaza hospital 1, 30202 cartagena, spain. Graphene has been proposed as a promising transparent conducting electrode material in organic photovoltaic opv solar cells to substitute the widely used indium tin oxide ito. Its high transparency, conductivity, flexibility, and abundance make it an excellent material to be applied in the field of organic. Graphene has been employed as transparent electrodes in organic solar cells oscs due to its good physical and optical properties. Aligned carbon nanotube sheets are developed as a new family of electrodes to fabricate dye.
The electrical and optical properties of the graphene oxide films are investigated systematically. Graphene electrodes could replace indium tin oxide for lower. Ndoped graphene was also studied as the counter electrode of dsscs 79,80. Jan 06, 2011 graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. Solutionprocessed graphenebased transparent conductive.
Graphene has attracted considerable attention as a nextgeneration transparent conducting electrode, because of its high electrical conductivity. The energy conversion efficiency of the resulting cell is higher than the randomly dispersed carbon nanotube film and comparable with the platinum. Macvicar fellow and principal investigator in mtl and rle, have reported a new way to apply graphene electrodes to organic solar cellsbringing the possible wide spread use of carbonbased solar cells much closer to reality. Department of chemistry, school of science, the university of tokyo, 731 hongo. Graphene electrodes for organic solar cells researchers identify technique that could make a new kind of solar photovoltaic panel practical nanotechnology, hyesung park et al 2010 nanotechnology 21 505204. Large area graphene films were produced by chemical vapor deposition on copper foils and transferred onto glass as transparent electrodes. Ndoping of graphene was achieved by annealing mixtures of graphene oxide with urea. Solar energy materials and solar cells vol 163, pages 1284 april. Introduction dyesensitized solar cells dsscs have taken up broad interest as a promising lowcost solar cell. But one stubborn problem has slowed the development of such cells. Kauppinen3, shigeo maruyama2,4, and yutaka matsuo1, 1.
Jun 25, 20 n doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. Ultrathin and flexible perovskite solar cells with graphene. Graphene mesh electrodes gmes with good conductivity and transparency have been fabricated by the standard industrial photolithography and o 2 plasma etching process using graphene solutions. Pss layer has been replaced by graphene derivatives and are generally used as holetransport layers in organic solar cells. The biggest problem with using graphene in such a device was getting the material to adhere to the panel. Consequently, graphene seems to be a suitable candidate as a conductive electrode in devices such as organic lightemitting diode 187, solar cells 188 189190, and an electronic device. Nanotube electrodes improve solar cells rice university. Graphene creates efficient electrodes for solar cells. Solutionprocessable graphene mesh transparent electrodes. Graphene materials and their use in dyesensitized solar cells.
Solution processable reduced graphene oxide decorated ato. Organic solar cells using nanoimprinted transparent metal electrodes by myunggyu kang, myungsu kim, jinsang kim, and l. Graphene repels water, so typical procedures for producing an electrode on the surface by depositing the material from a solution wont work. Replacing indiumtinoxide as the material for electrodes in organic solar cells provides a number of benefits. Chandler, mit news the structure of graphene, a flexible material made of carbon atoms arranged in a layer just one atom. Graphene as transparent and current spreading electrode in. Graphene for electrodes in organic solar cells could. Graphene films were also used as conductive and transparent electrodes to replace ito in organic 14.
The resultant ngnp was deposited on fluorine doped sno2 ftoglass substrates by using electrospray espray coating, and their. A novel concept based on the use of solutions containing already qualified crystalline antimonydoped tin oxide sno2. The isolation of freestanding graphene in 2004 was the spark for a new scientific revolution in the field of optoelectronics. Graphenebased transparent electrodes for hybrid solar cells.
Superior metalfree counter electrodes for organic dyesensitized solar cells. Ato nanoparticles are decorated by reduced graphene oxide rgo through a hydrothermal synthesis method. Schottky junctions, where the graphene itself is responsible for absorbing visible light and show that these devices can be used as tunable photodetectors. Jan 24, 2018 an annealing free process is considered as a technological advancement for the development of flexible or wearable organic electronic devices, which can prevent the distortion of substrates and damage to the active components of the device and simplify the overall fabrication process to increase the industrial applications. While organic solar cells have been promising an inexpensive way to exploit solar. The hybrid solar cell devices consist of solutionprocessed poly 3,4ethlenedioxythiophene. Doped and textured graphene as electrode for organic solar. Transparent, flexible solar cells combine organic materials. Imagine a future in which solar cells are all around uson windows and walls, cell phones, laptops, and more. Flexion bonding transfer of multilayered graphene as a top. The organic solar cells with the electrode of four layers graphene have an improved pce up to 2. Bulovickong create graphene electrodes for organic solar.
All parts of the devices, including electrodes and active layers, were prepared at low temperature. For the threelayer stacked graphene electrode, the transfer was repeated through layerbylayer stacking. Graphene could be used to manufacture the electrodes for the next generation of solar cells the solar power industry is currently reliant on organic materials such as indiumtinoxide ito for. Environmental and economic assessment of itofree electrodes for organic solar cells christopher j. Solar cell performance was analyzed before and after this encapsulation in order to determine exactly how efficient the addition of these graphene electrodes were to the device a as whole 2.
Apr 16, 2017 this means that if their new electrode is successfully implemented, we could see solar cells linked with superconductors that have 3,000 percent more storage capacity than whats currently possible. Researchers from mit developed a new way to use graphene as an electrode for organic solar cells. The graphene electrodes were deposited on quartz substrates by spin coating of an aqueous dispersion of functionalized graphene, followed by a reduction process to reduce the sheet resistance. Applications of carbon nanotubes and graphene for thirdgeneration. The supporting information is available free of charge on the acs. This new graphenebased electrode could boost solar storage. Cvd graphene 30 90 23 reduced graphene oxide 80 79 24 a characteristics shown here are for the most commonly used ito on pet, rather than the best demonstrated performance. Our perovskite solar cells are light weight and have the high power output per weight specific weight of 5 wg. Graphene applications in other types of solar cells u 7. It is the first time to use graphene transparent electrodes in ultraflexible perovskite solar cells.
The graphenebased transparent and conductive films were demonstrated to be costeffective electrodes working in organicinorganic hybrid schottky solar cells. Aside from the two electrodes, traditional organic solar cells comprise of an active pedot. Graphene electrodes for organic solar cells nanowerk news a promising approach for making solar cells that are inexpensive, lightweight and flexible is to use organic that is, carboncontaining compounds instead of expensive, highly purified silicon. Jun 15, 2017 imagine a future in which solar cells are all around uson windows and walls, cell phones, laptops, and more. Various studies have reported opv devices with graphene electrodes showing comparable performances to itobased opv cells. Metalelectrode free windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i.
This new graphenebased electrode could boost solar. Development of annealingfree, solutionprocessable inverted. Doped graphene electrodes for organic solar cells this article has been downloaded from iopscience. Heavily ndoped monolayer graphene electrodes used for.
Rice, tsinghua collaboration could yield lowcost, efficient alternative to siliconbased cells. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier. Flexible organic solar cells over 15% efficiency with. Highly efficient counter electrodes ces for dyesensitized solar cells dsscs were developed using thin films of scalable and highquality, nitrogendoped graphene nanoplatelets ngnp, which was synthesized by a simple twostep reaction sequence. Solutionprocessable graphene mesh transparent electrodes for. An annealingfree process is considered as a technological advancement for the development of flexible or wearable organic electronic devices, which can prevent the distortion of substrates and damage to the active components of the device and simplify the overall fabrication process to increase the industrial applications. An annealing free process is considered as a technological advancement for the development of flexible or wearable organic electronic devices, which can prevent the distortion of substrates and damage to the active components of the device and simplify the overall fabrication process to increase the industrial applications. It has been well documented that graphene can be used for transparent electrodes in. For successful implementation in these applications, howev er, one major challenge in developing highperformance solar. Introduction of graphene improves photovoltaic properties of perovskite solar cells pscs. Downloaded by fudan university on 02 september 2012. Highly efficient counter electrodes ces for dyesensitized solar cells dsscs were developed using thin films of scalable and highquality, nitrogen doped graphene nanoplatelets ngnp, which was synthesized by a simple twostep reaction sequence. Jing kong department of electrical engineering and computer science, massachusetts institute of technology.
We have carried out comparative study using both ag grids and blg as current spreading electrode cse and tcse, respectively. Graphene is a 2d atomic layer of carbon atoms with unique electronic properties like outstanding carrier mobility, high carrier saturation velocity, excellent thermal conductivity, high mechanical strength, transparency, thinness, and flexibility which make graphene an excellent choice of material for advanced applications in future solar cell design. Solar cells with allgraphene electrodes are potentially lowcost. Graphene films as transparent electrodes for photovoltaic devices based on cadmium sulfide thin films. Graphene materials and their use in dyesensitized solar cells joseph d. It has been well documented that graphene can be used for transparent electrodes in flat panel displays, tough screens, and solar cells. Applications of cnts and graphene in organic solar cells. Researchers have had a hard time coming up with appropriate. N doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. May 10, 2017 one way to improve the use of graphene in solar cells is to dope the sheets of graphene with oxygen to create graphene oxide which is less conductive but better able to hold a charge.
Conductive graphene electrodes for dyesensitized solar cells. Ndoped graphenepedot composite films as counter electrodes. Graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. However, the electrical conductivity of graphene films synthesized by chemical vapor deposition cvd is still inferior to that of conventional. Ndoped graphene nanoplatelets as superior metalfree. Small molecular weight organic solar cells can be directly deposited.
Conclusions and outlook u author information v corresponding author v notes v biographies v acknowledgments v abbreviations v references w 1. The shortcircuit current and fill factor of these devices on graphene are lower than those of control device on indium tin oxide due to the higher sheet resistance of the graphene films. Organic solar cells using cvdgrown graphene electrodes view the table of contents for this issue, or go to the journal homepage for more home search collections journals about contact us my iopscience. Aligned carbon nanotube sheets for the electrodes of. Bulovickong create graphene electrodes for organic solar cells. Ndoped graphene nanoplatelets as superior metalfree counter. The resultant ngnp was deposited on fluorinedoped sno2 ftoglass substrates by using electrospray espray coating, and their. N doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells article in acs nano 76 may 20 with 191 reads how we measure reads. Ju mj1, kim jc, choi hj, choi it, kim sg, lim k, ko j, lee jj, jeon iy, baek jb, kim hk. Metalelectrodefree windowlike organic solar cells with.
However, the fabrication reliability or device yield has not been widely discussed. The device combines lowcost organic carboncontaining materials with electrodes of graphene, a flexible, transparent material made from inexpensive, abundant carbon sources. Pdf doped graphene electrodes for organic solar cells. A new flexible, transparent solar cell developed at mit brings that future one step closer.
Organic photovoltaic opv cells using gmes as the transparent electrodes with a blend of poly3hexylthiophenephenylc 61butyric acid methyl ester p3htpc 61 bm as the active layer have been fabricated and exhibit a power conversion efficiency pce of 2. Our study reveals that blg based solar cell shows better efficiency of 24. Jul 17, 2017 aside from the two electrodes, traditional organic solar cells comprise of an active pedot. N doped graphene nanoplatelets as superior metal free counter electrodes for organic dyesensitized solar cells article in acs nano 76 may 20 with 191 reads how we measure reads. Neutralcolor semitransparent organic solar cells with all. Graphene electrodes for organic solar cells 6 january 2011, by david l. One way to improve the use of graphene in solar cells is to dope the sheets of graphene with oxygen to create graphene oxide which is less conductive but better able to hold a charge. Pss layer has been replaced by graphene derivatives and are commonly used as holetransport layers in organic solar cells.
This means that if their new electrode is successfully implemented, we could see solar cells linked with superconductors that have 3,000 percent more storage capacity than whats currently possible. Pss to graphene electrodes in organic solar cells hyesung park, yumeng shi. Solar cells were encapsulated with a glass substrate in order to successfully integrate the thinfilm graphene lsgmscs onto the device. Ultrathin and flexible perovskite solar cells with. Organic solar cells with solutionprocessed graphene. Graphene electrodes for organic solar cells mit news. Pdf conjugated polymerbased bulk heterojunction bhj solar cells are widely recognized as a promising alternative to their. Apr 17, 2012 rice, tsinghua collaboration could yield lowcost, efficient alternative to siliconbased cells.
Graphenebased transparent flexible electrodes for polymer solar cells. All parts of the devices, including electrodes and active layers, were prepared at. Hobeom kim 1, sanghoon bae 2, taehee han 1, kyunggeun lim 1, jonghyun ahn 2 and taewoo lee 1. Novel 2d material from amqsbased defect engineering for efficient. Published 11 december 20 2014 iop publishing ltd nanotechnology, volume 25, number 1. Capacityboosted supercapacitors would offer both longterm reliability and quickburst energy release, he says. Meng l et al 2018 organic and solutionprocessed tandem solar cells with 17. Fabricated bilayer graphene blg has been studied as transparent and current spreading electrode tcse for silicon solar cell, using tcadsilvaco 2d simulation. Aligned carbon nanotube sheets for the electrodes of organic.
Due to its extraordinary optoelectronic and mechanical properties, graphene is the next wonder material that could act as an ideal lowcost alternative material for the effective replacement of the expensive conventional materials used in organic optoelectronic. Small molecular weight organic solar cells can be directly deposited on such graphene anodes. Organic solar cells using cvdgrown graphene electrodes. Pdf to date graphene and graphenederived materials have created an. P and n doped graphene electrodes have been used and the solar cells achieved a maximum efficiency of 1. Graphene for electrodes in organic solar cells could reduce costs. Pss layer and a donoracceptor blend layer commonly containing p 3 ht or fullerenes or both. Surfaceengineered graphene quantum dots incorporated into. We demonstrate highlytransparent organic solar cells with allgraphene electrode as well as inkjetprinted perovskite solar cells with graphene electrodes. Ultrathin organic solar cells with graphene doped by. Metalelectrodefree windowlike organic solar cells with pdoped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i.
The nature of graphene makes it a highly sought after material for transparent and non transparent electrodes and double electrode designs for supercapacitors. Metalelectrodefree windowlike organic solar cells with p. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier that can protect the organic solar cells from air. Houston april 17, 2012 forests of carbon nanotubes are an efficient alternative for platinum electrodes in dyesensitized solar cells dsc, according to new research by collaborators at rice university and tsinghua university. Free flexible organic solar cells with graphene top. Pdf graphene synthesis and application for solar cells. Pss layer and a donoracceptor blend layer commonly composed of p3ht or fullerenes or both. In addition, it is flexible, like the organic solar cells themselves, so it could be part of installations that require the panel to follow the contours of a structure, such as a patterned roof. Chemical doping and enhanced solar energy conversion of. Apr 05, 2017 solar cells were encapsulated with a glass substrate in order to successfully integrate the thinfilm graphene lsgmscs onto the device. Mit researchers use graphene as an electrode for organic.
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