Temperature-dependent photocarrier recombination dynamics in Cu 2ZnSnS4 single crystals

Le Quang Phuong, Makoto Okano, Yasuhiro Yamada, Akira Nagaoka, Kenji Yoshino, Yoshihiko Kanemitsu

研究成果: Article査読

23 被引用数 (Scopus)

抄録

Time-resolved photoluminescence (PL) measurements have been used to study the temperature-dependent photocarrier recombination dynamics in Cu 2ZnSnS4 (CZTS) single crystals. We found a significant change of nearly four orders of magnitude of the PL decay time, from microseconds at low temperatures to subnanoseconds at room temperature. The slow PL decay at low temperatures indicates localization of the photocarriers at the band tails. Due to the large band tail states, the PL decay time depends strongly on both the photon energy and excitation density. It is pointed out that the drastically enhanced nonradiative recombination at high temperatures is one of the main factors that determine the power conversion efficiency of CZTS-based solar cells.

本文言語English
論文番号081907
ジャーナルApplied Physics Letters
104
8
DOI
出版ステータスPublished - 2014 2 24
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

フィンガープリント

「Temperature-dependent photocarrier recombination dynamics in Cu <sub>2</sub>ZnSnS<sub>4</sub> single crystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル