Annealing effect of absorber layer on SnS/CdS heterojunction band alignments
JAPANESE JOURNAL OF APPLIED PHYSICS(2022)
Abstract
The effect of annealing on the physical properties of an SnS thin film and also on SnS/CdS heterojunction band alignment was studied. Vacuum annealing has greatly improved the crystalline quality of SnS and an average grain size of 1.6 mu m was achieved. Sulfur-rich secondary phases observed on the surface of as-grown SnS thin film were eliminated after vacuum annealing, resulting in a decrease of the resistivity and an increase of the carrier concentration of the film. A maximum hole mobility of 17 cm(2) V-1 s(-1) was obtained for SnS thin films annealed at 400 degrees C. A transition of SnS/CdS heterojunction from "spike" type to "cliff" type was observed when the vacuum annealed SnS thin film was post-air-annealed at 200 and 250 degrees C. The band alignment of SnS/CdS heterojunction could be adjustable between "spike" type to "cliff" type via vacuum annealing followed by post-air-annealing.
MoreTranslated text
Key words
Thin-film solar cells, SnS, Vacuum annealing, Band alignment, Air annealing
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined