ORCID Profile
0000-0002-3081-0472
Current Organisation
University of Oxford
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Publisher: American Chemical Society (ACS)
Date: 30-04-2018
Publisher: Springer Science and Business Media LLC
Date: 13-04-2018
DOI: 10.1038/S41598-018-24436-6
Abstract: We explore the degradation behaviour under continuous illumination and direct oxygen exposure of inverted unencapsulated formamidinium(FA) 0.83 Cs 0.17 Pb(I 0.8 Br 0.2 ) 3 , CH 3 NH 3 PbI 3 , and CH 3 NH 3 PbI 3−x Cl x perovskite solar cells. We continuously test the devices in-situ and in-operando with current-voltage sweeps, transient photocurrent, and transient photovoltage measurements, and find that degradation in the CH 3 NH 3 PbI 3−x Cl x solar cells due to oxygen exposure occurs over shorter timescales than FA 0.83 Cs 0.17 Pb(I 0.8 Br 0.2 ) 3 mixed-cation devices. We attribute these oxygen-induced losses in the power conversion efficiencies to the formation of electron traps within the perovskite photoactive layer. Our results highlight that the formamidinium-caesium mixed-cation perovskites are much less sensitive to oxygen-induced degradation than the methylammonium-based perovskite cells, and that further improvements in perovskite solar cell stability should focus on the mitigation of trap generation during ageing.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6EE01969B
Abstract: Realizing the theoretical limiting power conversion efficiency (PCE) in perovskite solar cells requires a better understanding and control over the fundamental loss processes occurring in the bulk of the perovskite layer and at the internal semiconductor interfaces in devices.
Publisher: American Chemical Society (ACS)
Date: 06-12-2017
Publisher: Wiley
Date: 20-06-2019
Publisher: Springer Science and Business Media LLC
Date: 19-10-2023
Publisher: Wiley
Date: 17-09-2018
Abstract: Optoelectronic properties are unraveled for formamidinium tin triiodide (FASnI
Publisher: Wiley
Date: 02-2018
Publisher: Springer Science and Business Media LLC
Date: 06-08-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0EE00132E
Abstract: By correlating photovoltaic and material properties with metal content, we identify compositional ranges of low and high optoelectronic quality in (FA 0.83 Cs 0.17 )(Pb 1−y Sn y )I 3 perovskites.
Publisher: Springer Science and Business Media LLC
Date: 13-08-2018
Publisher: Springer Science and Business Media LLC
Date: 07-2019
DOI: 10.1038/S41586-019-1357-2
Abstract: Solar cells based on metal halide perovskites are one of the most promising photovoltaic technologies
Publisher: Wiley
Date: 16-08-2019
Publisher: Wiley
Date: 04-08-2017
Publisher: Wiley
Date: 12-2016
Abstract: Air-stable doping of the n-type fullerene layer in an n-i-p planar heterojunction perovskite device is capable of enhancing device efficiency and improving device stability. Employing a (HC(NH
Publisher: American Chemical Society (ACS)
Date: 25-08-2018
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Zhiping Wang.