In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 17 ( 2023), p. 9646-9653
Abstract:
In kesterite Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cells, the insufficient CdS/CZTSSe heterojunction built-in electric field due to the low carrier concentration is an important factor limiting the photoelectric conversion performance. Herein, we introduce an extrinsic La 3+ incorporation to realize a synergetic carrier doping of this heterojunction. By forming shallow La Cd and La Sn substitution defects, electron and hole concentration in CdS and kesterite has been obviously increased, which effectively improves the electric property and interface charge transfer of the heterojunction. The resulting reduction in the minority carrier loss has finally realized a high cell efficiency of 13.9% at room temperature. Moreover, the carrier doping allows the heterojunction to work in a much wider temperature region and the cell obtains an impressively high efficiency of 22% at 130 K.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702232-8
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