Efficiency enhancement of graphene/silicon-pillar-array solar cells by HNO3 and PEDOT-PSS

Nanoscale
Tingting FengHongwei Zhu

Abstract

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.

References

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Sep 25, 2007·Nature Materials·A FasolinoM I Katsnelson
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Mar 12, 2011·ACS Nano·Razvan A NistorGlenn J Martyna

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Citations

Oct 1, 2015·Advanced Materials·Xinming LiHongwei Zhu
Feb 26, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Yichen XuXibin Yu
Jun 5, 2014·Chemical Reviews·Adriano AmbrosiMartin Pumera
Aug 13, 2021·Nanotechnology·Kaoru Toko, Hiromasa Murata

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