中国物理B ›› 2018, Vol. 27 ›› Issue (7): 78801-078801.doi: 10.1088/1674-1056/27/7/078801

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Dependence of the solar cell performance on nanocarbon/Si heterojunctions

Shiqi Xiao(肖仕奇), Qingxia Fan(范庆霞), Xiaogang Xia(夏晓刚), Zhuojian Xiao(肖卓建), Huiliang Chen(陈辉亮), Wei Xi(席薇), Penghui Chen(陈鹏辉), Junjie Li(李俊杰), Yanchun Wang(王艳春), Huaping Liu(刘华平), Weiya Zhou(周维亚)   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2018-04-17 出版日期:2018-07-05 发布日期:2018-07-05
  • 通讯作者: Weiya Zhou E-mail:wyzhou@iphy.ac.cn
  • 基金资助:

    Project supported by the National Key R&D Program of China (Grant No. 2018YFA0208402), the National Basic Research Program of China (Grant No. 2012CB932302), the National Natural Science Foundation of China (Grant Nos. 11634014, 51172271, and 51372269), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09040202).

Dependence of the solar cell performance on nanocarbon/Si heterojunctions

Shiqi Xiao(肖仕奇)1,3, Qingxia Fan(范庆霞)1,3, Xiaogang Xia(夏晓刚)1,3, Zhuojian Xiao(肖卓建)1,3, Huiliang Chen(陈辉亮)1,3, Wei Xi(席薇)1,3, Penghui Chen(陈鹏辉)1,3, Junjie Li(李俊杰)1,3, Yanchun Wang(王艳春)1,2,3, Huaping Liu(刘华平)1,2,3, Weiya Zhou(周维亚)1,2,3   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-04-17 Online:2018-07-05 Published:2018-07-05
  • Contact: Weiya Zhou E-mail:wyzhou@iphy.ac.cn
  • Supported by:

    Project supported by the National Key R&D Program of China (Grant No. 2018YFA0208402), the National Basic Research Program of China (Grant No. 2012CB932302), the National Natural Science Foundation of China (Grant Nos. 11634014, 51172271, and 51372269), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09040202).

摘要:

Solar cells that combine single-crystalline silicon (Si) with graphene (G) have been widely researched in order to develop next-generation photovoltaic devices. However, the power conversion efficiency (PCE) of G/Si solar cell without chemical doping is commonly low due to the relatively high resistance of graphene. In this work, through combining graphene with carbon nanotube (CNT) networks, we fabricated three kinds of hybrid nanocarbon film/Si heterojunction solar cells in order to increase the PCE of the graphene based Si solar cell. We investigated the characteristics of different nanocarbon film/Si solar cells and found that their performance depends on the heterojunctions. Specifically, a doping-free G-CNT/Si solar cell demonstrated a high PCE of 7.9%, which is nearly equal to the combined value of two individuals (G/Si and CNT/Si). This high efficiency is attributed to the synergistic effect of graphene and CNTs, and can be further increased to 9.1% after applying a PMMA antireflection coating. This study provides a potential way to further improve the Si based heterojunction solar cells.

关键词: carbon nanotube, graphene, heterojunction, silicon solar cell

Abstract:

Solar cells that combine single-crystalline silicon (Si) with graphene (G) have been widely researched in order to develop next-generation photovoltaic devices. However, the power conversion efficiency (PCE) of G/Si solar cell without chemical doping is commonly low due to the relatively high resistance of graphene. In this work, through combining graphene with carbon nanotube (CNT) networks, we fabricated three kinds of hybrid nanocarbon film/Si heterojunction solar cells in order to increase the PCE of the graphene based Si solar cell. We investigated the characteristics of different nanocarbon film/Si solar cells and found that their performance depends on the heterojunctions. Specifically, a doping-free G-CNT/Si solar cell demonstrated a high PCE of 7.9%, which is nearly equal to the combined value of two individuals (G/Si and CNT/Si). This high efficiency is attributed to the synergistic effect of graphene and CNTs, and can be further increased to 9.1% after applying a PMMA antireflection coating. This study provides a potential way to further improve the Si based heterojunction solar cells.

Key words: carbon nanotube, graphene, heterojunction, silicon solar cell

中图分类号:  (Carbon nanotubes)

  • 88.30.rh
81.05.ue (Graphene) 73.40.Lq (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions) 88.40.jj (Silicon solar cells)