2021年12月9日
n-type electrical conduction in SnS thin films
Physical Review Materials
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 5
- 号
- 12
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/physrevmaterials.5.125405
- 出版者・発行元
- American Physical Society (APS)
Tin monosulfide (SnS) usually exhibits p-type conduction due to the low formation enthalpy of acceptor-type defects, and as a result, n-type SnS thin films have never been obtained. In this paper, we realize n-type conduction in SnS thin films by using radiofrequency-magnetron sputtering with Cl doping and a sulfur plasma source during deposition. Here, n-type SnS thin films are obtained at all the substrate temperatures employed in this paper (221-341 °C), exhibiting carrier concentrations and Hall mobilities of ∼2×1018cm-3 and 0.1-1cm2V-1s-1, respectively. The films prepared without a sulfur plasma source, on the other hand, exhibit p-type conduction despite containing a comparable amount of Cl donors. This is likely due to a significant number of acceptor-type defects originating from sulfur deficiency in p-type films, which appears as a broad optical absorption within the band gap. We demonstrate n-type SnS thin films in this paper for the realization of SnS homojunction solar cells, which are expected to have a higher conversion efficiency than the conventional heterojunction SnS solar cells.
- リンク情報
-
- DOI
- https://doi.org/10.1103/physrevmaterials.5.125405
- URL
- https://link.aps.org/article/10.1103/PhysRevMaterials.5.125405
- URL
- http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevMaterials.5.125405/fulltext
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85121613890&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85121613890&origin=inward
- ID情報
-
- DOI : 10.1103/physrevmaterials.5.125405
- eISSN : 2475-9953
- SCOPUS ID : 85121613890