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  4. Deep level trapped defect analysis in CH3NH3PbI3 perovskite solar cells by deep level transient spectroscopy
 
research article

Deep level trapped defect analysis in CH3NH3PbI3 perovskite solar cells by deep level transient spectroscopy

Heo, Sung
•
Seo, Gabseok
•
Lee, Yonghui
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2017
Energy & Environmental Science

We report the presence of defects in CH3NH3PbI3, which is one of the main factors that deteriorates the performance of perovskite solar cells. Although the efficiency of the perovskite solar cells has been improved by curing defects using various methods, deeply trapped defects in the perovskite layer have not been systematically studied, and their function is still unclear. The comparison and anal. of defects in differently prepd. perovskite solar cells reveals that both solar cells have two kinds of deep level defects (E1 and E2)​. In the one-​pot soln. processed solar cell, the defect state E1 is dominant, while E2 is the major defect in the solar cell prepd. using the cuboid method. Since the energy level of E1 is higher than that of E2, the cuboid solar cell shows higher open-​circuit voltage and efficiency.

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Type
research article
DOI
10.1039/C7EE00303J
Web of Science ID

WOS:000401408500007

Author(s)
Heo, Sung
Seo, Gabseok
Lee, Yonghui
Lee, Dongwook
Seol, Minsu
Lee, Jooho
Park, Jong-Bong
Kim, Kihong
Yun, Dong-Jin
Kim, Yong Su
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Date Issued

2017

Publisher

Royal Soc Chemistry

Published in
Energy & Environmental Science
Volume

10

Issue

5

Start page

1128

End page

1133

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GMF  
Available on Infoscience
March 11, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/135219
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