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Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells

Nickel oxide (NiO) is one of the most promising and high-performing Hole Transporting Layer (HTL) in inverted perovskite solar cells due to ideal band alignment with perovskite absorber, wide band gap, and high mobility of charges. At the same time, however, NiO does not provide good contact and tra...

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Autores principales: Saranin, Danila, Gostischev, Pavel, Tatarinov, Dmitry, Ermanova, Inga, Mazov, Vsevolod, Muratov, Dmitry, Tameev, Alexey, Kuznetsov, Denis, Didenko, Sergey, Di Carlo, Aldo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6540312/
https://www.ncbi.nlm.nih.gov/pubmed/31052172
http://dx.doi.org/10.3390/ma12091406
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author Saranin, Danila
Gostischev, Pavel
Tatarinov, Dmitry
Ermanova, Inga
Mazov, Vsevolod
Muratov, Dmitry
Tameev, Alexey
Kuznetsov, Denis
Didenko, Sergey
Di Carlo, Aldo
author_facet Saranin, Danila
Gostischev, Pavel
Tatarinov, Dmitry
Ermanova, Inga
Mazov, Vsevolod
Muratov, Dmitry
Tameev, Alexey
Kuznetsov, Denis
Didenko, Sergey
Di Carlo, Aldo
author_sort Saranin, Danila
collection PubMed
description Nickel oxide (NiO) is one of the most promising and high-performing Hole Transporting Layer (HTL) in inverted perovskite solar cells due to ideal band alignment with perovskite absorber, wide band gap, and high mobility of charges. At the same time, however, NiO does not provide good contact and trap-free junction for hole collection. In this paper, we examine this problem by developing a double hole transport configuration with a copper iodide (CuI) interlayer for efficient surface passivation. Transient photo-current (TPC) measurements showed that Perovskite/HTL interface with CuI interlayer has an improved hole injection; CuI passivation reduces the concentration of traps and the parasitic charge accumulation that limits the flow of charges. Moreover, we found that CuI protect the HTL/perovskite interface from degradation and consequently improve the stability of the cell. The presence of CuI interlayer induces an improvement of open-circuit voltage V(OC) (from 1.02 V to 1.07 V), an increase of the shunt resistance R(SH) (100%), a reduction of the series resistance R(S) (−30%), and finally a +10% improvement of the solar cell efficiency.
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spelling pubmed-65403122019-06-05 Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells Saranin, Danila Gostischev, Pavel Tatarinov, Dmitry Ermanova, Inga Mazov, Vsevolod Muratov, Dmitry Tameev, Alexey Kuznetsov, Denis Didenko, Sergey Di Carlo, Aldo Materials (Basel) Article Nickel oxide (NiO) is one of the most promising and high-performing Hole Transporting Layer (HTL) in inverted perovskite solar cells due to ideal band alignment with perovskite absorber, wide band gap, and high mobility of charges. At the same time, however, NiO does not provide good contact and trap-free junction for hole collection. In this paper, we examine this problem by developing a double hole transport configuration with a copper iodide (CuI) interlayer for efficient surface passivation. Transient photo-current (TPC) measurements showed that Perovskite/HTL interface with CuI interlayer has an improved hole injection; CuI passivation reduces the concentration of traps and the parasitic charge accumulation that limits the flow of charges. Moreover, we found that CuI protect the HTL/perovskite interface from degradation and consequently improve the stability of the cell. The presence of CuI interlayer induces an improvement of open-circuit voltage V(OC) (from 1.02 V to 1.07 V), an increase of the shunt resistance R(SH) (100%), a reduction of the series resistance R(S) (−30%), and finally a +10% improvement of the solar cell efficiency. MDPI 2019-04-30 /pmc/articles/PMC6540312/ /pubmed/31052172 http://dx.doi.org/10.3390/ma12091406 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Saranin, Danila
Gostischev, Pavel
Tatarinov, Dmitry
Ermanova, Inga
Mazov, Vsevolod
Muratov, Dmitry
Tameev, Alexey
Kuznetsov, Denis
Didenko, Sergey
Di Carlo, Aldo
Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title_full Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title_fullStr Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title_full_unstemmed Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title_short Copper Iodide Interlayer for Improved Charge Extraction and Stability of Inverted Perovskite Solar Cells
title_sort copper iodide interlayer for improved charge extraction and stability of inverted perovskite solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6540312/
https://www.ncbi.nlm.nih.gov/pubmed/31052172
http://dx.doi.org/10.3390/ma12091406
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