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Polyethylenimine ethoxylated interlayer-mediated ZnO interfacial engineering for high-performance and low-temperature processed flexible perovskite solar cells: A simple and viable route for one-step processed CH3NH3PbI3

Title
Polyethylenimine ethoxylated interlayer-mediated ZnO interfacial engineering for high-performance and low-temperature processed flexible perovskite solar cells: A simple and viable route for one-step processed CH3NH3PbI3
Authors
Lim, Ju WonWang, HuanChoi, Chi HunQuan, Li NaChung, KyungwhaPark, Won-TaeNoh, Yong-YoungKim, Dong Ha
Ewha Authors
김동하Huan Wang
SCOPUS Author ID
김동하scopus
Issue Date
2019
Journal Title
JOURNAL OF POWER SOURCES
ISSN
0378-7753JCR Link

1873-2755JCR Link
Citation
JOURNAL OF POWER SOURCES vol. 438
Keywords
Flexible perovskite solar cellLow-temperature processHigh-efficiencyZnO buffer layerPEIE interlayerNext generation energy source
Publisher
ELSEVIER
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Developing perovskite solar cells (PSCs) with high-efficiency and a low-temperature process has great potential for the realization of the scalable, economic, and roll-to-roll based renewable energy conversion devices. ZnO has been recognized as the promising electron transport layer (ETL) that may overcome the limitations of the conventional TiO2. However, methylammonium lead iodide (MAPbI(3)) perovskite is prone to decomposition at the ZnO surface, which hinders the development of simple one-step deposition of perovskite, resulting in the limited photovoltaic performance. Herein, we report interlayer mediated efficient ETLs for viable flexible PSCs. The utilization of polyethyleneimine ethoxylated layer on ZnO prevents the direct contact between the perovskite and Ells, avoiding the photoactive layer decomposition. Thus, interlayer-mediated PSCs show higher efficiency with enhanced stability by decreasing the electron transport barrier. As a result, the PSC employing tailor-designed ETL interfaces exhibited average power conversion efficiency (PCE) of 15.8%, which was superior by 25.4%
DOI
10.1016/j.jpowsour.2019.226956
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자연과학대학 > 화학·나노과학전공 > Journal papers
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