Open Circuit Potential Build-Up in Perovskite Solar Cells from Dark Conditions to 1 Sun

Laxman Gouda; Ronen Gottesman; Adam Ginsburg; David A. Keller; Eynav Haltzi; Jiangang Hu; Shay Tirosh; Assaf Y. Anderson; Arie Zaban; Pablo P. Boix

doi:10.1021/acs.jpclett.5b02014

Open Circuit Potential Build-Up in Perovskite Solar Cells from Dark Conditions to 1 Sun

Laxman Gouda, Ronen Gottesman, Adam Ginsburg, David A. Keller, Eynav Haltzi, Jiangang Hu, Shay Tirosh, Assaf Y. Anderson, Arie Zaban, Pablo P. Boix

Department of Chemistry

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

The high open-circuit potential (V_oc) achieved by perovskite solar cells (PSCs) is one of the keys to their success. The V_oc analysis is essential to understand their working mechanisms. A large number of CH₃NH₃PbI_3-xCl_x PSCs were fabricated on single large-area substrates and their V_oc dependencies on illumination intensity, I₀, were measured showing three distinctive regions. Similar results obtained in Al₂O₃ based PSCs relate the effect to the compact TiO₂ rather than the mesoporous oxide. We propose that two working mechanisms control the V_oc in PSCs. The rise of V_oc at low I₀ is determined by the employed semiconductor n-type contact (TiO₂ or MgO coated TiO₂). In contrast, at I₀ close to AM1.5G, the employed oxide does not affect the achieved voltage. Thus, a change of regime from an oxide-dominated E_Fn (as in the dye sensitized solar cells) to an E_Fn, directly determined by the CH₃NH₃PbI_3-xCl_x absorber is suggested.

Original language	English
Pages (from-to)	4640-4645
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	6
Issue number	22
DOIs	https://doi.org/10.1021/acs.jpclett.5b02014
State	Published - 19 Nov 2015

Keywords

PSC
dark condition
methylammonium lead iodide
perovskite
solar cells

All Science Journal Classification (ASJC) codes

General Materials Science
Physical and Theoretical Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acs.jpclett.5b02014

Cite this

@article{33b4d92e7f8249128c049319c3ee4af9,

title = "Open Circuit Potential Build-Up in Perovskite Solar Cells from Dark Conditions to 1 Sun",

abstract = "The high open-circuit potential (Voc) achieved by perovskite solar cells (PSCs) is one of the keys to their success. The Voc analysis is essential to understand their working mechanisms. A large number of CH3NH3PbI3-xClx PSCs were fabricated on single large-area substrates and their Voc dependencies on illumination intensity, I0, were measured showing three distinctive regions. Similar results obtained in Al2O3 based PSCs relate the effect to the compact TiO2 rather than the mesoporous oxide. We propose that two working mechanisms control the Voc in PSCs. The rise of Voc at low I0 is determined by the employed semiconductor n-type contact (TiO2 or MgO coated TiO2). In contrast, at I0 close to AM1.5G, the employed oxide does not affect the achieved voltage. Thus, a change of regime from an oxide-dominated EFn (as in the dye sensitized solar cells) to an EFn, directly determined by the CH3NH3PbI3-xClx absorber is suggested.",

keywords = "PSC, dark condition, methylammonium lead iodide, perovskite, solar cells",

author = "Laxman Gouda and Ronen Gottesman and Adam Ginsburg and Keller, {David A.} and Eynav Haltzi and Jiangang Hu and Shay Tirosh and Anderson, {Assaf Y.} and Arie Zaban and Boix, {Pablo P.}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = nov,

day = "19",

doi = "10.1021/acs.jpclett.5b02014",

language = "الإنجليزيّة",

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T1 - Open Circuit Potential Build-Up in Perovskite Solar Cells from Dark Conditions to 1 Sun

AU - Gouda, Laxman

AU - Gottesman, Ronen

AU - Ginsburg, Adam

AU - Keller, David A.

AU - Haltzi, Eynav

AU - Hu, Jiangang

AU - Tirosh, Shay

AU - Anderson, Assaf Y.

AU - Zaban, Arie

AU - Boix, Pablo P.

PY - 2015/11/19

Y1 - 2015/11/19

N2 - The high open-circuit potential (Voc) achieved by perovskite solar cells (PSCs) is one of the keys to their success. The Voc analysis is essential to understand their working mechanisms. A large number of CH3NH3PbI3-xClx PSCs were fabricated on single large-area substrates and their Voc dependencies on illumination intensity, I0, were measured showing three distinctive regions. Similar results obtained in Al2O3 based PSCs relate the effect to the compact TiO2 rather than the mesoporous oxide. We propose that two working mechanisms control the Voc in PSCs. The rise of Voc at low I0 is determined by the employed semiconductor n-type contact (TiO2 or MgO coated TiO2). In contrast, at I0 close to AM1.5G, the employed oxide does not affect the achieved voltage. Thus, a change of regime from an oxide-dominated EFn (as in the dye sensitized solar cells) to an EFn, directly determined by the CH3NH3PbI3-xClx absorber is suggested.

AB - The high open-circuit potential (Voc) achieved by perovskite solar cells (PSCs) is one of the keys to their success. The Voc analysis is essential to understand their working mechanisms. A large number of CH3NH3PbI3-xClx PSCs were fabricated on single large-area substrates and their Voc dependencies on illumination intensity, I0, were measured showing three distinctive regions. Similar results obtained in Al2O3 based PSCs relate the effect to the compact TiO2 rather than the mesoporous oxide. We propose that two working mechanisms control the Voc in PSCs. The rise of Voc at low I0 is determined by the employed semiconductor n-type contact (TiO2 or MgO coated TiO2). In contrast, at I0 close to AM1.5G, the employed oxide does not affect the achieved voltage. Thus, a change of regime from an oxide-dominated EFn (as in the dye sensitized solar cells) to an EFn, directly determined by the CH3NH3PbI3-xClx absorber is suggested.

KW - PSC

KW - dark condition

KW - methylammonium lead iodide

KW - perovskite

KW - solar cells

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U2 - 10.1021/acs.jpclett.5b02014

DO - 10.1021/acs.jpclett.5b02014

M3 - مقالة

C2 - 26624787

SN - 1948-7185

VL - 6

SP - 4640

EP - 4645

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 22

ER -

Open Circuit Potential Build-Up in Perovskite Solar Cells from Dark Conditions to 1 Sun

Abstract

Keywords

All Science Journal Classification (ASJC) codes

UN SDGs

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