Impact of PL reabsorption and surface passivation on the internal quantum efficiency of perovskite solar cells (Conference Presentation)

Mingcong Wang; Kai Wang; Yajun Gao; Jafar I. Khan; Dalia Al Nakdali; Erkki Alarousu; Stefaan De Wolf; Denis Andrienko; Frederic Laquai

doi:10.1117/12.2544139

10 March 2020 Impact of PL reabsorption and surface passivation on the internal quantum efficiency of perovskite solar cells (Conference Presentation)

Mingcong Wang, Kai Wang, Yajun Gao, Jafar I. Khan, Dalia Al Nakdali, Erkki Alarousu, Stefaan De Wolf, Denis Andrienko, Frederic Laquai

Author Affiliations +

Proceedings Volume 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX; 112750E (2020) https://doi.org/10.1117/12.2544139
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Internal quantum efficiency (IQE) is a key parameter determining solar cell power conversion efficiency. While reported IQEs of metal-halide perovskite solar cells are often close to one, the contributions of photoluminescence reabsorption (PLr) and surface recombination (SR) to IQE has not been elucidated. In this work, both effects are examined by photoluminescence spectroscopies and time-resolved terahertz spectroscopy (TRTS). Then PLr rate and SR velocity are extracted from TRTS kinetics by diffusion theory. At last a model is proposed to calculate the carrier-collection probability and discuss contributions of PLr and SR on the IQE.

Conference Presentation

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Mingcong Wang, Kai Wang, Yajun Gao, Jafar I. Khan, Dalia Al Nakdali, Erkki Alarousu, Stefaan De Wolf, Denis Andrienko, and Frederic Laquai "Impact of PL reabsorption and surface passivation on the internal quantum efficiency of perovskite solar cells (Conference Presentation)", Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 112750E (10 March 2020); https://doi.org/10.1117/12.2544139

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