Electronic Structure of TiO2/CH3NH3Pbl3 Perovskite Solar Cell Interfaces

被引：423

作者：

Lindblad, Rebecka ^{[1
]}

Bi, Dongqin ^{[2
]}

Park, Byung-wook ^{[2
]}

Oscarsson, Johan ^{[1
]}

Gorgoi, Mihaela ^{[3
]}

Siegbahn, Hans ^{[1
]}

Odelius, Michael ^{[4
]}

Johansson, Erik M. J. ^{[2
]}

Rensmo, Hakan ^{[1
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron Mol & Condensed Matter Phys, S-75120 Uppsala, Sweden

[2] Uppsala Univ, Dept Chem, S-75120 Uppsala, Sweden

[3] Helmholtz Zentrum Berlin Mat & Energie GmbH, D-12489 Berlin, Germany

[4] Stockholm Univ, Dept Phys, AlbaNova Univ Ctr, S-10691 Stockholm, Sweden

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2014年 / 5卷 / 04期

基金：

瑞典研究理事会;

关键词：

ANGULAR-DISTRIBUTION PARAMETERS; TIO2; CH3NH3PBI3; DEPOSITION; EFFICIENT; PROPERTY;

D O I：

10.1021/jz402749f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electronic structure and chemical composition of efficient CH(3)NH(3)Pbl(3) perovskite solar cell materials deposited onto mesoporous TiO2 were studied using photoelectron spectroscopy with hard X-rays. With this technique, it is possible to directly measure the occupied energy levels of the perovskite as well as the TiO2 buried beneath and thereby determine the energy level matching of the interface. The measurements of the valence levels were in good agreement with simulated density of states, and the investigation gives information on the character of the valence levels. We also show that two different deposition techniques give results indicating similar electronic structures.

引用

页码：648 / 653

页数：6

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