Reduction of V oc induced by the electron-phonon scattering in GaAs and CH 3 NH 3 PbI 3

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Abstract

This work highlights the intrinsic modification of the electronic density-of-states due to electron-phonon scattering. Using a quantum model we show that, by broadening the density-of-states in the bandgap, the scattering changes the absorption/emission ratio and then some photovoltaic parameters like V oc . For the high mobility GaAs material we obtain a moderate V oc reduction of 4mV. In the highly polar CH 3 NH 3 PbI 3 perovskite material, even through the mobility is low, the broadening in the density-of-states is limited by the small phonon energy and then the V oc reduction remains inferior to 41mV.

Original languageEnglish
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1796-1799
Number of pages4
ISBN (Electronic)9781538685297
DOIs
Publication statusPublished - 26 Nov 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: 10 Jun 201815 Jun 2018

Publication series

Name2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
Volume2018-January

Conference

Conference7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/TerritoryUnited States
CityWaikoloa Village
Period10/06/1815/06/18

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