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Title: Highly Efficient and Uniform 1 cm 2 Perovskite Solar Cells with an Electrochemically Deposited NiO x Hole-Extraction Layer

Abstract

Here, given that the highest certified conversion efficiency of the organic-inorganic perovskite solar cell (PSC) already exceeds 22%, which is even higher than that of the polycrystalline silicon solar cell, the significance of new scalable processes that can be utilized for preparing large-area devices and their commercialization is rapidly increasing. From this perspective, the electrodeposition method is one of the most suitable processes for preparing large-area devices because it is an already commercialized process with proven controllability and scalability. Here, a highly uniform NiO x layer prepared by electrochemical deposition is reported as an efficient hole-extraction layer of a p-i-n-type planar PSC with a large active area of >1 cm 2. It is demonstrated that the increased surface roughness of the NiO x layer, achieved by controlling the deposition current density, facilitates the hole extraction at the interface between perovskite and NiO x, and thus increases the fill factor and the conversion efficiency. The electrochemically deposited NiO x layer also exhibits extremely uniform thickness and morphology, leading to highly efficient and uniform large-area PSCs. As a result, the p-i-n-type planar PSC with an area of 1.084 cm 2 exhibits a stable conversion efficiency of 17.0% (19.2% for 0.1 cm 2)more » without showing hysteresis effects.« less

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [3];  [2];  [1]
  1. Seoul National Univ., Seoul (Republic of Korea)
  2. Pohang Univ. of Science and Technology (POSTECH), Gyeongbuk (Republic of Korea)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1369122
Report Number(s):
NREL/JA-5900-68709
Journal ID: ISSN 1864-5631
Grant/Contract Number:
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ChemSusChem
Additional Journal Information:
Journal Volume: 10; Journal Issue: 12; Journal ID: ISSN 1864-5631
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; charge extraction; electrochemical deposition; methylammonium lead halides; nickel oxides; solar cells

Citation Formats

Park, Ik Jae, Kang, Gyeongho, Park, Min Ah, Kim, Ju Seong, Seo, Se Won, Kim, Dong Hoe, Zhu, Kai, Park, Taiho, and Kim, Jin Young. Highly Efficient and Uniform 1 cm2 Perovskite Solar Cells with an Electrochemically Deposited NiOx Hole-Extraction Layer. United States: N. p., 2017. Web. doi:10.1002/cssc.201700612.
Park, Ik Jae, Kang, Gyeongho, Park, Min Ah, Kim, Ju Seong, Seo, Se Won, Kim, Dong Hoe, Zhu, Kai, Park, Taiho, & Kim, Jin Young. Highly Efficient and Uniform 1 cm2 Perovskite Solar Cells with an Electrochemically Deposited NiOx Hole-Extraction Layer. United States. doi:10.1002/cssc.201700612.
Park, Ik Jae, Kang, Gyeongho, Park, Min Ah, Kim, Ju Seong, Seo, Se Won, Kim, Dong Hoe, Zhu, Kai, Park, Taiho, and Kim, Jin Young. Wed . "Highly Efficient and Uniform 1 cm2 Perovskite Solar Cells with an Electrochemically Deposited NiOx Hole-Extraction Layer". United States. doi:10.1002/cssc.201700612. https://www.osti.gov/servlets/purl/1369122.
@article{osti_1369122,
title = {Highly Efficient and Uniform 1 cm2 Perovskite Solar Cells with an Electrochemically Deposited NiOx Hole-Extraction Layer},
author = {Park, Ik Jae and Kang, Gyeongho and Park, Min Ah and Kim, Ju Seong and Seo, Se Won and Kim, Dong Hoe and Zhu, Kai and Park, Taiho and Kim, Jin Young},
abstractNote = {Here, given that the highest certified conversion efficiency of the organic-inorganic perovskite solar cell (PSC) already exceeds 22%, which is even higher than that of the polycrystalline silicon solar cell, the significance of new scalable processes that can be utilized for preparing large-area devices and their commercialization is rapidly increasing. From this perspective, the electrodeposition method is one of the most suitable processes for preparing large-area devices because it is an already commercialized process with proven controllability and scalability. Here, a highly uniform NiOx layer prepared by electrochemical deposition is reported as an efficient hole-extraction layer of a p-i-n-type planar PSC with a large active area of >1 cm2. It is demonstrated that the increased surface roughness of the NiOx layer, achieved by controlling the deposition current density, facilitates the hole extraction at the interface between perovskite and NiOx, and thus increases the fill factor and the conversion efficiency. The electrochemically deposited NiOx layer also exhibits extremely uniform thickness and morphology, leading to highly efficient and uniform large-area PSCs. As a result, the p-i-n-type planar PSC with an area of 1.084 cm2 exhibits a stable conversion efficiency of 17.0% (19.2% for 0.1 cm2) without showing hysteresis effects.},
doi = {10.1002/cssc.201700612},
journal = {ChemSusChem},
number = 12,
volume = 10,
place = {United States},
year = {Wed May 10 00:00:00 EDT 2017},
month = {Wed May 10 00:00:00 EDT 2017}
}

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