Photocarrier localization and 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

32 引用 (Scopus)

抄録

We have studied the photocarrier localization and recombination dynamics in Cu2ZnSnS4 single crystals at room temperature. The band-gap energy and tail states below the band edge were evaluated by a combination of photoluminescence (PL), PL excitation, photocurrent, and femtosecond transient reflectivity spectroscopy. The photocarriers are rapidly localized to shallow tail states within a typical time constant of several picoseconds to a few tens of picoseconds. The sub-nanosecond PL decay dynamics indicate the importance of multiple carrier trapping processes in the shallow tail states. Therefore, it is concluded that the tail states dominate the optical responses of Cu2ZnSnS4 single crystals.

元の言語English
記事番号191902
ジャーナルApplied Physics Letters
103
発行部数19
DOI
出版物ステータスPublished - 2013 11 4
外部発表Yes

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photoluminescence
single crystals
time constant
photocurrents
trapping
reflectance
decay
room temperature
spectroscopy
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

これを引用

Quang Phuong, L., Okano, M., Yamada, Y., Nagaoka, A., Yoshino, K., & Kanemitsu, Y. (2013). Photocarrier localization and recombination dynamics in Cu 2ZnSnS4 single crystals. Applied Physics Letters, 103(19), [191902]. https://doi.org/10.1063/1.4829063

Photocarrier localization and recombination dynamics in Cu 2ZnSnS4 single crystals. / Quang Phuong, Le; Okano, Makoto; Yamada, Yasuhiro; Nagaoka, Akira; Yoshino, Kenji; Kanemitsu, Yoshihiko.

:: Applied Physics Letters, 巻 103, 番号 19, 191902, 04.11.2013.

研究成果: Article

Quang Phuong, L, Okano, M, Yamada, Y, Nagaoka, A, Yoshino, K & Kanemitsu, Y 2013, 'Photocarrier localization and recombination dynamics in Cu 2ZnSnS4 single crystals', Applied Physics Letters, 巻. 103, 番号 19, 191902. https://doi.org/10.1063/1.4829063
Quang Phuong, Le ; Okano, Makoto ; Yamada, Yasuhiro ; Nagaoka, Akira ; Yoshino, Kenji ; Kanemitsu, Yoshihiko. / Photocarrier localization and recombination dynamics in Cu 2ZnSnS4 single crystals. :: Applied Physics Letters. 2013 ; 巻 103, 番号 19.
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