通过 HNO3 和 PEDOT-PSS 提高石墨烯/硅柱阵列太阳能电池的效率。
Efficiency enhancement of graphene/silicon-pillar-array solar cells by HNO3 and PEDOT-PSS.
机构信息
Tsinghua National Laboratory for Information Science and Technology (TNList), Institute of Microelectronics, Tsinghua University, Beijing 100084, PR China.
出版信息
Nanoscale. 2012 Mar 21;4(6):2130-3. doi: 10.1039/c2nr12001a. Epub 2012 Feb 15.
A single-layer graphene film was grown on copper foil by chemical vapor deposition and transferred onto a silicon-pillar-array (SPA) substrate to make a Schottky junction solar cell. The SPA substrate was specifically designed to suppress reflectance and enhance light absorption. The energy conversion efficiency of the prepared graphene/SPA solar cells achieved a maximum of 2.90% with a junction area of 0.09 cm(2). HNO(3) was employed to dope the graphene in the solar cells, and the time dependence of HNO(3) treatment on the cell performance was studied. Poly(3,4-ethylenedioxythiophene) polystyrenesulfonic acid (PEDOT-PSS) was also introduced in graphene/SPA solar cells by spin coating on top of the graphene film, and its modification on the cell performance was characterized. The results show that both HNO(3) and the PEDOT-PSS film could enhance the energy conversion efficiency of graphene/SPA solar cells.
单层石墨烯薄膜通过化学气相沉积在铜箔上生长，并转移到硅柱阵列（SPA）衬底上，以制造肖特基结太阳能电池。SPA 衬底的设计目的是抑制反射率并增强光吸收。制备的石墨烯/SPA 太阳能电池的能量转换效率最高达到 2.90%，结面积为 0.09 cm(2)。使用 HNO(3)对太阳能电池中的石墨烯进行掺杂，并研究了 HNO(3)处理时间对电池性能的影响。通过在石墨烯薄膜上旋涂聚（3,4-亚乙基二氧噻吩）聚苯乙烯磺酸（PEDOT-PSS），也将其引入石墨烯/SPA 太阳能电池中，并对其对电池性能的修饰进行了表征。结果表明，HNO(3)和 PEDOT-PSS 薄膜都可以提高石墨烯/SPA 太阳能电池的能量转换效率。
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