@article{Moia:2019:10.1039/c8ee02362j,
author = {Moia, D and Gelmetti, I and Calado, P and Fisher, W and Stringer, M and Game, O and Hu, Y and Docampo, P and Lidzey, D and Palomares, E and Nelson, J and Barnes, PRF and Moia, D and Gelmetti, I and Calado, P and Fisher, W and Stringer, M and Game, O and Hu, Y and Docampo, P and Lidzey, D and Palomares, E and Nelson, J and Barnes, P},
doi = {10.1039/c8ee02362j},
journal = {Energy and Environmental Science},
pages = {1296--1308},
title = {Ionic-to-electronic current amplification in hybrid perovskite solar cells: ionically gated transistor-interface circuit model explains hysteresis and impedance of mixed conducting devices},
url = {http://dx.doi.org/10.1039/c8ee02362j},
volume = {12},
year = {2019}
}

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TY  - JOUR
AB  - Mobile ions in hybrid perovskite semiconductors introduce a new degree of freedom to electronic devices suggesting applications beyond photovoltaics. An intuitive device model describing the interplay between ionic and electronic charge transfer is needed to unlock the full potential of the technology. We describe the perovskite-contact interfaces as transistors which couple ionic charge redistribution to energetic barriers controlling electronic injection and recombination. This reveals an amplification factor between the out of phase electronic current and the ionic current. Our findings suggest a strategy to design thin film electronic components with large, tuneable, capacitor-like and inductor-like characteristics. The resulting simple equivalent circuit model, which we verified with time-dependent drift-diffusion simulations of measured impedance spectra, allows a general description and interpretation of perovskite solar cell behaviour.
AU  - Moia,D
AU  - Gelmetti,I
AU  - Calado,P
AU  - Fisher,W
AU  - Stringer,M
AU  - Game,O
AU  - Hu,Y
AU  - Docampo,P
AU  - Lidzey,D
AU  - Palomares,E
AU  - Nelson,J
AU  - Barnes,PRF
AU  - Moia,D
AU  - Gelmetti,I
AU  - Calado,P
AU  - Fisher,W
AU  - Stringer,M
AU  - Game,O
AU  - Hu,Y
AU  - Docampo,P
AU  - Lidzey,D
AU  - Palomares,E
AU  - Nelson,J
AU  - Barnes,P
DO  - 10.1039/c8ee02362j
EP  - 1308
PY  - 2019///
SN  - 1754-5692
SP  - 1296
TI  - Ionic-to-electronic current amplification in hybrid perovskite solar cells: ionically gated transistor-interface circuit model explains hysteresis and impedance of mixed conducting devices
T2  - Energy and Environmental Science
UR  - http://dx.doi.org/10.1039/c8ee02362j
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000465275800009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/74103
VL  - 12
ER  - 

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