硅BC8量子点太阳能电池中的多重激子效应

卢辉东; 铁生年

doi:10.3788/fgxb20183905.0668

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硅BC8量子点太阳能电池中的多重激子效应

器件制备及器件物理 | 更新时间：2020-08-12

- 硅BC8量子点太阳能电池中的多重激子效应
- Multiple Exciton Generation in Si BC8 Quantum Dots Solar Cell
- 发光学报 2018年39卷第5期页码：668-673
- 作者机构：
  
  青海大学新能源光伏产业研究中心, 青海西宁 810016
- 作者简介：
  
  [ "卢辉东(1987-),男,宁夏固原人,硕士,助教,2013年于宁夏大学获得硕士学位,主要从事太阳能电池的研究。E-mail:luhuidong123@126.com" ]
  [ "铁生年(1965-),男,青海民和人,教授,1987于青海师范大学获得学士学位,主要从事新能源材料设计和加工的研究。E-mail:tieshengnian@163.com" ]
- 基金信息：
  
  青海省重点实验室发展专项资金（2014-Z-Y31，2015-Z-Y18）资助项目()
- DOI：10.3788/fgxb20183905.0668
  中图分类号： O521
- 纸质出版日期：2018-5-5，
  
  网络出版日期：2018-3-5，
  
  收稿日期：2017-8-20，
  
  修回日期：2018-2-16，
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卢辉东, 铁生年,. 硅BC8量子点太阳能电池中的多重激子效应[J]. 发光学报, 2018,39(5): 668-673

LU Hui-dong, TIE Sheng-nian,. Multiple Exciton Generation in Si BC8 Quantum Dots Solar Cell[J]. Chinese Journal of Luminescence, 2018,39(5): 668-673
卢辉东, 铁生年,. 硅BC8量子点太阳能电池中的多重激子效应[J]. 发光学报, 2018,39(5): 668-673 DOI： 10.3788/fgxb20183905.0668.

LU Hui-dong, TIE Sheng-nian,. Multiple Exciton Generation in Si BC8 Quantum Dots Solar Cell[J]. Chinese Journal of Luminescence, 2018,39(5): 668-673 DOI： 10.3788/fgxb20183905.0668.

摘要

多重激子效应是指在纳米半导体晶体中，量子点吸收一个高能光子而产生多个电子-空穴对的过程，该效应可以提高单结太阳电池能量转换效率。利用碰撞电离机制和费米统计模型计算了工作温度300 K的单结硅BC8量子点太阳能电池在AM1.5G太阳光谱下的能量转换效率。对于波长在280~580 nm的入射光，多重激子效应可以大幅增强硅BC8量子点直径

5.0 nm的量子点太阳电池的能量转换效率。硅纳米量子点的直径

=6.3~6.4 nm时，最大能量转换效率为51.6%。

Abstract

Multiple exciton generation(MEG) is a process whereby multiple electron-hole pairs or excitons are produced upon absorption of a single photon in semiconductor quantum dots(QDs). This effect represents a promising route to increase solar conversion efficiencies in single-junction photovoltaic cells. MEG in Si BC8 QDs is based on impact ionization and statistical Fermi. The power conversion efficiency for Si QDs solar cells was calculated under AM1.5G solar spectrum with the cell temperature at 300 K. For the incident wavelength of 280-580 nm

the power conversion efficiency can be improved by MEG effect for

5.0 nm Si QDs. For Si BC8 QDs with

=6.3-6.4 nm

the maximum energy conversion efficiency is 51.6%.

关键词

多重激子效应量子点太阳能电池

Keywords

multiple exciton generationquantum dotsphotovoltaics

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