Raman and XPS studies of CIGS/Mo interfaces under various annealing temperatures

TY - JOUR

T1 - Raman and XPS studies of CIGS/Mo interfaces under various annealing temperatures

AU - Han, Junfeng

AU - Ouyang, Liangqi

AU - Zhuang, Daming

AU - Liao, Cheng

AU - Liu, Jiang

AU - Zhao, Ming

AU - Cha, Li Mei

AU - Besland, M. P.

N1 - Funding Information: The first author acknowledges National Nature Science Foundation of China ( 51202227 ). JY Mevellec and J. Hamon are warmly acknowledged for Raman and XPS analyses, respectively, performed at the CNRS-IMN (Nantes-France).

PY - 2014/12/1

Y1 - 2014/12/1

N2 - In this work, copper indium gallium selenide (CIGS) thin films were prepared by sputtering CIGS quaternary target and subsequent annealing in the 450-550 °C range. For analyses purpose, the films were peeled off from Mo-coated glass and both parts were named as 'CIGS side' and 'Mo side' respectively. Raman spectroscopy and X-Ray Photoelectron Spectroscopy (XPS) were performed to identify crystalline phases and chemical compositions. On the 'Mo side', a MoSex layer was evidenced with increased thickness for higher annealing temperature. On the 'CIGS side', XPS highlighted a continuous Ga enrichment and a Cu content decrease with increasing temperature. Na was detected on both Mo and CIGS sides. Its concentration and distribution relied on the temperature. Finally, relationships between interface modifications and annealing temperature were discussed.

AB - In this work, copper indium gallium selenide (CIGS) thin films were prepared by sputtering CIGS quaternary target and subsequent annealing in the 450-550 °C range. For analyses purpose, the films were peeled off from Mo-coated glass and both parts were named as 'CIGS side' and 'Mo side' respectively. Raman spectroscopy and X-Ray Photoelectron Spectroscopy (XPS) were performed to identify crystalline phases and chemical compositions. On the 'Mo side', a MoSex layer was evidenced with increased thickness for higher annealing temperature. On the 'CIGS side', XPS highlighted a continuous Ga enrichment and a Cu content decrease with increasing temperature. Na was detected on both Mo and CIGS sides. Its concentration and distribution relied on the temperature. Finally, relationships between interface modifications and annealing temperature were discussed.

KW - Interfaces

KW - Raman

KW - Solar energy materials

KW - Sputtering

KW - Thin films

KW - XPS

UR - http://www.scopus.com/inward/record.url?scp=84907307190&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2014.08.087

DO - 10.1016/j.matlet.2014.08.087

M3 - 文章

AN - SCOPUS:84907307190

SN - 0167-577X

VL - 136

SP - 278

EP - 281

JO - Materials Letters

JF - Materials Letters

ER -