In:
Solar RRL, Wiley, Vol. 6, No. 11 ( 2022-11)
Abstract:
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 Cu x Cr y O z 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 ≈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.
Type of Medium:
Online Resource
ISSN:
2367-198X
,
2367-198X
DOI:
10.1002/solr.202200501
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2882014-9
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