Open Access
Scientific Reports, volume 6, issue 1, publication number 37106
Detecting trap states in planar PbS colloidal quantum dot solar cells
1
Publication type: Journal Article
Publication date: 2016-11-15
PubMed ID:
27845392
Multidisciplinary
Abstract
The recently developed planar architecture (ITO/ZnO/PbS-TBAI/PbS-EDT/Au) has greatly improved the power conversion efficiency of colloidal quantum dot photovoltaics (QDPVs). However, the performance is still far below the theoretical expectations and trap states in the PbS-TBAI film are believed to be the major origin, characterization and understanding of the traps are highly demanded to develop strategies for continued performance improvement. Here employing impedance spectroscopy we detect trap states in the planar PbS QDPVs. We determined a trap state of about 0.34 eV below the conduction band with a density of around 3.2 × 1016 cm−3 eV−1. Temperature dependent open-circuit voltage analysis, temperature dependent diode property analysis and temperature dependent build-in potential analysis consistently denotes an below-bandgap activation energy of about 1.17–1.20 eV.
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GOST
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Jin Z. et al. Detecting trap states in planar PbS colloidal quantum dot solar cells // Scientific Reports. 2016. Vol. 6. No. 1. 37106
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Jin Z., Wang A., Zhou Q., Wang Y., Wang J. Detecting trap states in planar PbS colloidal quantum dot solar cells // Scientific Reports. 2016. Vol. 6. No. 1. 37106
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TY - JOUR
DO - 10.1038/srep37106
UR - https://www.nature.com/articles/srep37106
TI - Detecting trap states in planar PbS colloidal quantum dot solar cells
T2 - Scientific Reports
AU - Jin, Zhiwen
AU - Wang, Aiji
AU - Zhou, Qing
AU - Wang, Yinshu
AU - Wang, Jizheng
PY - 2016
DA - 2016/11/15
PB - Springer Nature
IS - 1
VL - 6
PMID - 27845392
SN - 2045-2322
ER -
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@article{2016_Jin,
author = {Zhiwen Jin and Aiji Wang and Qing Zhou and Yinshu Wang and Jizheng Wang},
title = {Detecting trap states in planar PbS colloidal quantum dot solar cells},
journal = {Scientific Reports},
year = {2016},
volume = {6},
publisher = {Springer Nature},
month = {nov},
url = {https://www.nature.com/articles/srep37106},
number = {1},
doi = {10.1038/srep37106}
}