Cited 9 time in webofscience Cited 9 time in scopus

Flexible high-efficiency CZTSSe solar cells on stainless steel substrates

Title
Flexible high-efficiency CZTSSe solar cells on stainless steel substrates
Authors
Ahn, KwangseokKim, Se-YunKim, SammiSon, Dae-HoKim, Seung-HyunKim, SeongYeonKim, JunHoSung, Shi-JoonKim, Dae-HwanKang, Jin-Kyu
DGIST Authors
Son, Dae-Ho; Sung, Shi-JoonKim, Dae-HwanKang, Jin-Kyu
Issue Date
2019-11
Citation
Journal of Materials Chemistry A, 7(43), 24891-24899
Type
Article
Article Type
Article
Keywords
KESTERITE CU2ZNSNS4DIFFUSION-BARRIERSEARTH-ABUNDANTLOW-COSTZNODEFECTSSTATEFILMSSIO2
ISSN
2050-7488
Abstract
Stainless steel (SS) foil is made of abundant materials and is a durable and flexible substrate, but the efficiency of a solar cell on SS foil deteriorates via the diffusion of impurities from the SS substrate into a Cu2ZnSn(S,Se)4 (CZTSSe) absorber layer. In this work, the properties of the diffusion barrier for CZTSSe solar cells is investigated by X-ray diffraction (XRD), secondary ion mass spectrometry (SIMS), and scanning electron microscopy (SEM). The industrially relevant oxide materials ZnO and SiO2 are used as diffusion barriers against impurities. The formation of a ZnSe reaction with Se degrades the barrier properties of the ZnO barrier layer. As a result, ZnO fails to act as a diffusion barrier, and Fe is observed in the absorber layer. On the other hand, the intrinsic diffusion barrier properties of SiO2 are superior to those of ZnO, and SiO2 is a stable diffusion barrier even after selenization. Therefore, SiO2 was applied to flexible solar cells, and a power conversion efficiency of 10.30%, the highest efficiency for CZTSSe on SS foil, was obtained. © 2019 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/10927
DOI
10.1039/c9ta08265d
Publisher
Royal Society of Chemistry
Related Researcher
  • Author Sung, Shi-Joon  
  • Research Interests Compound Semiconductor Materials & Processes
Files:
There are no files associated with this item.
Collection:
Division of Energy Technology1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE