Advanced Graphene-Based Transparent Conductive Electrodes for Photovoltaic Applications
| Autor: | David J. Sanz, Jorge Pedrós, Israel Arnedo, J. Cárabe, José Javier Gandía, José Pablo González, Montserrat Recalde Fernández, Fernando Calle, Rajveer Fandan, A. Boscá, Andrea Inés, M. A. Pampillon, A. Molinero, Javier Martínez, Marina de la Cruz, Susana Fernández |
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| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko, Elektroniko eta Telekomunikazio Saila |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Transparent electrodes lcsh:Mechanical engineering and machinery 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy Article law.invention law Monolayer lcsh:TJ1-1570 Electrical and Electronic Engineering Thin film Electrical conductor Graphene business.industry Mechanical Engineering graphene Photovoltaic system Conductance 021001 nanoscience & nanotechnology 0104 chemical sciences silicon heterojunction solar devices Wavelength transparent electrodes Control and Systems Engineering Electrode Silicon heterojunction solar devices Optoelectronics 0210 nano-technology business |
| Zdroj: | Micromachines Micromachines, Vol 10, Iss 6, p 402 (2019) Volume 10 Issue 6 Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname Academica-e: Repositorio Institucional de la Universidad Pública de Navarra Universidad Pública de Navarra |
| ISSN: | 2072-666X |
| DOI: | 10.3390/mi10060402 |
| Popis: | New architectures of transparent conductive electrodes (TCEs) incorporating graphene monolayers in different configurations have been explored with the aim to improve the performance of silicon-heterojunction (SHJ) cell front transparent contacts. In SHJ technology, front electrodes play an important additional role as anti-reflectance (AR) coatings. In this work, different transparent-conductive-oxide (TCO) thin films have been combined with graphene monolayers in different configurations, yielding advanced transparent electrodes specifically designed to minimize surface reflection over a wide range of wavelengths and angles of incidence and to improve electrical performance. A preliminary analysis reveals a strong dependence of the optoelectronic properties of the TCEs on (i) the order in which the different thin films are deposited or the graphene is transferred and (ii) the specific TCO material used. The results shows a clear electrical improvement when three graphene monolayers are placed on top on 80-nm-thick ITO thin film. This optimum TCE presents sheet resistances as low as 55 Ω/sq and an average conductance as high as 13.12 mS. In addition, the spectral reflectance of this TCE also shows an important reduction in its weighted reflectance value of 2&ndash 3%. Hence, the work undergone so far clearly suggests the possibility to noticeably improve transparent electrodes with this approach and therefore to further enhance silicon-heterojunction cell performance. These results achieved so far clearly open the possibility to noticeably improve TCEs and therefore to further enhance SHJ contact-technology performance. |
| Databáze: | OpenAIRE |
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