Graphene/semiconductor heterojunction solar cells with modulated antireflection and graphene work function

Yuxuan Lin; Xinming Li; Dan Xie; Tingting Feng; Yu Chen; Rui Song; He Tian; Tianling Ren; Minlin Zhong; Kunlin Wang; Hongwei Zhu

doi:10.1039/C2EE23538B

Graphene/semiconductor heterojunction solar cells with modulated antireflection and graphene work function†

Yuxuan Lin,‡^a Xinming Li,‡^b Dan Xie,*^a Tingting Feng,^a Yu Chen,^a Rui Song,^a He Tian,^a Tianling Ren,*^a Minlin Zhong,^b Kunlin Wang^b and Hongwei Zhu*^bc

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* Corresponding authors

^a Tsinghua National Laboratory for Information Science and Technology (TNList), Institute of Microelectronics, Tsinghua University, Beijing 100084, P. R. China
E-mail: xiedan@tsinghua.edu.cn, rentl@tsinghua.edu.cn

^b Key Laboratory for Advanced Manufacturing by Material Processing Technology, Ministry of Education and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China
E-mail: hongweizhu@tsinghua.edu.cn
Fax: +86 10 62773637
Tel: +86 10 62781065

^c Center for Nano and Micro Mechanics (CNMM), Tsinghua University, Beijing 100084, P. R. China

Abstract

Theoretical and experimental studies have been performed to simulate and optimize graphene/semiconductor heterojunction solar cells. By controlling graphene layer number, tuning graphene work function and adding an antireflection film, a maximal theoretical conversion efficiency of ∼9.2% could be achieved. Following the theoretical optimization proposal, the Schottky junction solar cells with modified graphene films and silicon pillar arrays were fabricated and were found to give a conversion efficiency of up to 7.7%.

Energy & Environmental Science

Graphene/semiconductor heterojunction solar cells with modulated antireflection and graphene work function†

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Graphene/semiconductor heterojunction solar cells with modulated antireflection and graphene work function

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