Bifacial CdTe Solar Cells with Copper Chromium Oxide Back-Buffer Layer

被引：7

作者：

Pokhrel, Dipendra ^{[1
]}

Mathew, Xavier ^{[1
,2
]}

Subedi, Kamala Khanal ^{[1
]}

Patel, Aesha ^{[1
]}

Phillips, Adam B. ^{[1
]}

Bastola, Ebin ^{[1
]}

Abudulimu, Abasi ^{[1
]}

Jamarkattel, Manoj K. ^{[1
]}

Rijal, Suman ^{[1
]}

Quader, Abdul ^{[1
]}

Friedl, Jared ^{[1
]}

Zawisza, Zachary ^{[1
]}

Yan, Yanfa ^{[1
]}

Heben, Michael J. ^{[1
]}

Ellingson, Randy J. ^{[1
]}

机构：

[1] Univ Toledo, Dept Phys & Astron, Wright Ctr Photovolta Innovat & Commercializat, Toledo, OH 43606 USA

[2] Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico

来源：

SOLAR RRL | 2022年 / 6卷 / 11期

关键词：

back-buffer layers; bifacial cells; CdTe; copper chromium oxide; THIN-FILM; TRANSPARENT; EFFICIENT; CONTACT;

D O I：

10.1002/solr.202200501

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Bifacial solar cells have the potential to maintain energy output higher than monofacial devices under unfavorable weather conditions. A transparent back-buffer layer which can passivate the interface and improve the minority carrier lifetime is critical in CdTe-based bifacial devices. Herein, solution-processed CuxCryOz as a promising back-buffer for CdTe/CdS solar cells is demonstrated. The carrier lifetimes measured at the front and back of the device are 31.2 and 3.1 ns, respectively, which correspond to an increase of approximate to 38% and 138%, respectively, compared to the reference device. This dramatic improvement in lifetime results in a 100% increase in short-circuit current measured with backside illumination. The best bifacial device has efficiencies 7.6% and 12.5%, respectively, from back and front illumination, yielding a bifaciality factor of 0.60.

引用

页数：7

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