两步上转换太阳能电池中电压提升异质结提高能量转换效率。

Increasing conversion efficiency of two-step photon up-conversion solar cell with a voltage booster hetero-interface.

机构信息

Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.

出版信息

Sci Rep. 2018 Jan 17;8(1):872. doi: 10.1038/s41598-018-19155-x.

DOI:10.1038/s41598-018-19155-x

PMID:29343735

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5772604/

Abstract

Development of high-efficiency solar cells is one of the attractive challenges in renewable energy technologies. Photon up-conversion can reduce the transmission loss and is one of the promising concepts which improve conversion efficiency. Here we present an analysis of the conversion efficiency, which can be increased by up-conversion in a single-junction solar cell with a hetero-interface that boosts the output voltage. We confirm that an increase in the quasi-Fermi gap and substantial photocurrent generation result in a high conversion efficiency.

摘要

高效太阳能电池的发展是可再生能源技术中极具吸引力的挑战之一。光子上转换可以降低传输损耗，是提高转换效率的有前途的概念之一。在这里，我们分析了转换效率，通过在具有异质界面的单结太阳能电池中进行上转换，可以提高输出电压，从而提高转换效率。我们证实，准费米能级间隙的增加和大量光电流的产生导致了高的转换效率。