Light-Induced Space-Charge Accumulation Zone as Photovoltaic Mechanism in Perovskite Solar Cells

The Journal of Physical Chemistry Letters
Isaac ZarazúaGermá Garcia-Belmonte

Abstract

We fabricated formamidinium lead iodide perovskite solar cell for analysis of the photovoltaic mechanism based on the interpretation of the capacitance variation under illumination. It was shown that the low-frequency capacitance increases proportional to incident light intensity, and in addition it increases proportional to absorber thickness. Furthermore, the voltage dependence of capacitance is exponential with slope 1/2 (thermal energy). We conclude that the large photovoltage and capacitance are associated with electronic accumulation zone at the interface with the metal oxide contact. While this type of accumulation capacitance is common in many devices as transistors, the perovskite solar cell shows a singular behavior in that under light the electronic carrier accumulation grows unlimited by another series capacitance, reaching values as large as 10 mF cm(-2) at one sun illumination.

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Citations

Mar 2, 2016·The Journal of Physical Chemistry Letters·Adharsh RajagopalAlex K-Y Jen
Jul 6, 2016·ACS Applied Materials & Interfaces·Victor W BergmannStefan A L Weber
Feb 9, 2017·The Journal of Physical Chemistry Letters·Sandheep RavishankarJuan Bisquert
Feb 10, 2017·The Journal of Physical Chemistry Letters·Yuhai ZhangOmar F Mohammed
Mar 14, 2017·The Journal of Physical Chemistry Letters·Nuria Vicente, Germà Garcia-Belmonte
Mar 14, 2017·The Journal of Physical Chemistry Letters·Elnaz GhahremaniradJuan Bisquert
Mar 30, 2017·ACS Applied Materials & Interfaces·Naemeh AeinehIván Mora-Seró
Feb 9, 2017·Physical Chemistry Chemical Physics : PCCP·Adam PockettPetra J Cameron
Feb 14, 2017·Physical Chemistry Chemical Physics : PCCP·Nir KedemDavid Cahen
May 20, 2016·Physical Chemistry Chemical Physics : PCCP·Teresa S RipollesShuzi Hayase
Aug 16, 2017·Physical Chemistry Chemical Physics : PCCP·Manuel SaladoShahzada Ahmad
Jun 22, 2018·Physical Chemistry Chemical Physics : PCCP·Xiaoqing ChenKenjiro Miyano
Nov 30, 2018·Physical Chemistry Chemical Physics : PCCP·Jesús Rodríguez-RomeroEva M Barea
Oct 3, 2019·The Journal of Chemical Physics·Clara ArandaAntonio Guerrero
Apr 7, 2019·Nature Communications·Firouzeh EbadiWolfgang Tress
Sep 25, 2019·Research : a Science Partner Journal·Essa A AlharbiMichael Grätzel
Apr 1, 2018·ChemPlusChem·Manuel SaladoShahzada Ahmad
Apr 29, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Priyabrata SadhukhanSachindranath Das
Jul 13, 2021·ACS Applied Materials & Interfaces·Angelo D MarshallJudy Z Wu
Dec 16, 2016·The Journal of Physical Chemistry Letters·Isaac ZarazuaGermà Garcia-Belmonte
Oct 3, 2019·ACS Applied Materials & Interfaces·Xiaofeng TangChristoph J Brabec
Aug 10, 2017·ACS Applied Materials & Interfaces·Daniel ProchowiczMichael Grätzel
Mar 2, 2019·Chemical Reviews·Philip SchulzAntoine Kahn
Feb 13, 2018·The Journal of Physical Chemistry Letters·Daniel Pérez-Del-ReyHenk J Bolink
Sep 24, 2019·ACS Applied Materials & Interfaces·Andrew F ZhouPeter X Feng
Apr 11, 2020·The Journal of Physical Chemistry Letters·Na LiuQi Chen
Dec 1, 2017·The Journal of Physical Chemistry Letters·Isaac ZarazúaGermà Garcia-Belmonte

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