The energy level alignment at the CH3NH3PbI3/pentacene interface
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- 作者：Gengwu Jia ; b ; Bin Zhaoa ; Fei Songa ; Guanhaojie Zhenga ; b ; Xiaonan Zhanga ; b ; Kongchao Shenc ; Yingguo Yanga ; Shi Chend ; ChenShi@ntu.edu.sg" class="auth_mail" title="E-mail the corresponding author ; Xingyu Gaoa ; gaoxingyu@sinap.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Perovskite solar cell ; Interface electronic structure ; Energy level alignment
- 刊名：Applied Surface Science
- 出版年：2017
- 出版时间：30 January 2017
- 年：2017
- 卷：393
- 期：Complete
- 页码：417-421
- 全文大小：1504 K
文摘
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The Energy Level Alignment at the CH3NH3PbI3/Pentacene Interface was resolved experimentally.
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The downward band bending and the dipole found at the pentacene side would favorably drive holes away from the interface into pentacene.
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A ∼0.7 eV offset between pentacene HOMO and CH3NH3PbI3 VBM would be in favor of hole transfer whereas a ∼1.35 eV offset between pentacene LUMO and CH3NH3PbI3 CBM should efficiently block the unwanted electron transfer from perovskite to pentacene.
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Pentacene could be a viable hole transfer material candidate on perovskite to be explored in perovskite devices.