Graphene based Schottky junction solar cells on patterned silicon-pillar-array substrate

作者：Feng Tingting^*; Xie Dan; Lin Yuxuan; Zang Yongyuan; Ren Tianling; Song Rui; Zhao Haiming; Tian He; Li Xiao; Zhu Hongwei; Liu Litian

来源：Applied Physics Letters, 2011, 99(23): 233505.

DOI：10.1063/1.3665404

Graphene-on-silicon Schottky junction solar cells were prepared with pillar-array-patterned silicon substrate. Such patterned substrate showed an anti-reflective characteristic and led to an absorption enhancement of the solar cell, which showed enhanced performance with short-circuit current density, open-circuit voltage, fill factor, and energy conversion efficiency of 464.86 mV, 14.58 mA/cm(2), 0.29, and 1.96%, respectively. Nitric acid was used to dope graphene film and the cell performance showed a great improvement with efficiency increasing to 3.55%. This is due to the p-type chemical doping effect of HNO3 which increases the work function and the carrier density of graphene.

• 出版日期2011-12-5
• 单位清华大学