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  1. 数理物質系 (Faculty of Pure and Applied Sciences)
  2. 丸本 一弘 (Marumoto Kazuhiro)
  1. コンテンツタイプ (Contents Type)
  2. 雑誌発表論文等 (Journal article, etc.)
  3. A~
  4. Applied physics letters

Direct observation of dramatically enhanced hole formation in a perovskite-solar-cell material spiro-OMeTAD by Li-TFSI doping

http://hdl.handle.net/2241/00146035
869df02c-1a8b-4d11-8b9c-c9e3626a4831
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APL_110-12.pdf APL_110-12 (624.3 kB)
item type Journal Article(1)
公開日 2017-05-08
タイトル
タイトル Direct observation of dramatically enhanced hole formation in a perovskite-solar-cell material spiro-OMeTAD by Li-TFSI doping
言語
言語 eng
資源タイプ
タイプ journal article
著者 Namatame, Miki

× Namatame, Miki

WEKO 161430

Namatame, Miki

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Yabusaki, Masaki

× Yabusaki, Masaki

WEKO 161431

Yabusaki, Masaki

Search repository
Watanabe, Takahiro

× Watanabe, Takahiro

WEKO 161432

Watanabe, Takahiro

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Ogomi, Yuhei

× Ogomi, Yuhei

WEKO 161433

Ogomi, Yuhei

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Hayase, Shuzi

× Hayase, Shuzi

WEKO 161434

Hayase, Shuzi

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Marumoto, Kazuhiro

× Marumoto, Kazuhiro

WEKO 161435

Marumoto, Kazuhiro

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著者別名 丸本, 一弘

× 丸本, 一弘

WEKO 353
e-Rad 50293668
筑波大学研究者総覧 0000000791

丸本, 一弘

Search repository
抄録
内容記述 Electron spin resonance (ESR) spectroscopy of 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobifluorene (spiro-OMeTAD) thin films and perovskite (CH3NH3PbI3)/spiro-OMeTAD layered films are reported. Clear ESR signals (g = 2.0030) were observed by adding a dopant lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) to the spiro-OMeTAD thin films, which directly showed the spin (hole) formation in spiro-OMeTAD by the Li-TFSI doping. The number of spins in the spiro-OMeTAD thin film has increased by more than two orders of magnitude by the Li-TFSI doping under dark conditions, which demonstrates from a microscopic viewpoint that Li-TFSI has high doping effects for the spiro-OMeTAD thin films. Under simulated solar irradiation, the spin density in the spiro-OMeTAD thin films and the perovskite/spiro-OMeTAD layered films largely increased by the Li-TFST doping due to the formation of long-lived holes in spiro-OMeTAD. The transient responses of the number of photogenerated spins, Nspin, of the layered films upon the light irradiation showed the increase and the decrease in the Nspin due to the hole transfer and recombination at the perovskite/spiro-OMeTAD interface. The states of long-lived holes in the spiro-OMeTAD layers were analyzed using the simulation of the ESR spectra, which reveals the mobile photogenerated holes with a lifetime >10 μs.
書誌情報 Applied physics letters

巻 110, 号 12, p. 123904, 発行日 2017-03
ISSN
収録物識別子 0003-6951
DOI
関連識別子
関連識別子 10.1063/1.4977789
権利
権利情報 This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
権利
権利情報 The following article appeared in Appl. Phys. Lett. 110, 123904 (2017) and may be found at http://dx.doi.org/10.1063/1.4977789.
著者版フラグ
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出版者
出版者 American Institute of Physics
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