標題: Resolving spectral overlap issue of intermediate band solar cells using non-uniform sub-bandgap state filling
作者: Lin, Albert
Phillips, Jamie
交大名義發表
電子工程學系及電子研究所
National Chiao Tung University
Department of Electronics Engineering and Institute of Electronics
關鍵字: solar cell;intermediate state;band;spectral overlap;sub-bandgap photovoltaics
公開日期: 1-十月-2014
摘要: Intermediate band solar cell provides novel alternative to multi-junction solar cell, but its efficiency is significantly degraded when spectral overlap exists between different absorption bands. Here, a scheme using non-uniform sub-bandgap state filling together with intermediate band transport is proposed to resolve the spectral overlap issue. On the basis of detailed balance calculation, spectrally decoupled devices using low-high state filling is shown to achieve 52.8% conversion efficiency when 4eV spectral overlap is present between absorption coefficients of different bands, compared with baseline efficiency equal to 35.1% for conventional half-filled intermediate band devices. If a base material without intermediate band is added to the two section low-high state filling devices, the efficiency is further increased to 61.5%, which approaches efficiency of 63.2% for intermediate band devices with no spectral overlap and 63.8% for unconstrained triple-junction tandem cells. The junction thermalization loss associated with proposed new structures is shown to be equal to conventional half-filled intermediate band devices. Copyright (c) 2013 John Wiley & Sons, Ltd.
URI: http://dx.doi.org/10.1002/pip.2358
http://hdl.handle.net/11536/25161
ISSN: 1062-7995
DOI: 10.1002/pip.2358
期刊: PROGRESS IN PHOTOVOLTAICS
Volume: 22
Issue: 10
起始頁: 1062
結束頁: 1069
顯示於類別:期刊論文


文件中的檔案:

  1. 000342686200005.pdf

若為 zip 檔案,請下載檔案解壓縮後,用瀏覽器開啟資料夾中的 index.html 瀏覽全文。