Characterization of low-frequency excess noise in perovskite-based photovoltaic cells

Shen Qian; Annie Ng; Zhiwei Ren; Charles Surya

doi:10.1109/ICNF.2015.7288579

Characterization of low-frequency excess noise in perovskite-based photovoltaic cells

Shen Qian, Annie Ng, Zhiwei Ren, Charles Surya

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We present experimental results on low-frequency noise characterizations of high-efficiency perovskite solar cells (PSCs). It is shown that annealing the device in dry oxygen results in significant enhancement in the power conversion efficiency of the device. Systematic investigations on the photothermal deflection spectroscopy and the low-frequency excess noise of the devices a indicate that oxygen annealing of the device resulted in the passivation of traps located at the grain boundaries of the perovskite films as well as the perovskite-spiro-MeOTAD interface.

Original language	English
Title of host publication	2015 International Conference on Noise and Fluctuations, ICNF 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467383356
DOIs	https://doi.org/10.1109/ICNF.2015.7288579
Publication status	Published - Oct 2 2015
Externally published	Yes
Event	International Conference on Noise and Fluctuations, ICNF 2015 - Xian, China Duration: Jun 2 2015 → Jun 6 2015

Conference

Conference	International Conference on Noise and Fluctuations, ICNF 2015
Country	China
City	Xian
Period	6/2/15 → 6/6/15

Fingerprint

Keywords

low-frequency noise
oxygen annealing
perovskite solar cells

ASJC Scopus subject areas

Electrical and Electronic Engineering
Acoustics and Ultrasonics

Cite this

Qian, S., Ng, A., Ren, Z., & Surya, C. (2015). Characterization of low-frequency excess noise in perovskite-based photovoltaic cells. In 2015 International Conference on Noise and Fluctuations, ICNF 2015 [7288579] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICNF.2015.7288579

Qian, S, Ng, A, Ren, Z & Surya, C 2015, Characterization of low-frequency excess noise in perovskite-based photovoltaic cells. in 2015 International Conference on Noise and Fluctuations, ICNF 2015., 7288579, Institute of Electrical and Electronics Engineers Inc., International Conference on Noise and Fluctuations, ICNF 2015, Xian, China, 6/2/15. https://doi.org/10.1109/ICNF.2015.7288579

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AB - We present experimental results on low-frequency noise characterizations of high-efficiency perovskite solar cells (PSCs). It is shown that annealing the device in dry oxygen results in significant enhancement in the power conversion efficiency of the device. Systematic investigations on the photothermal deflection spectroscopy and the low-frequency excess noise of the devices a indicate that oxygen annealing of the device resulted in the passivation of traps located at the grain boundaries of the perovskite films as well as the perovskite-spiro-MeOTAD interface.

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Access to Document

10.1109/ICNF.2015.7288579