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Defect-Passivation Using Organic Dyes for Enhanced Efficiency and Stability of Perovskite Solar Cells
East China Normal Univ, Peoples R China.
Shanghai Jiao Tong Univ, Peoples R China.
East China Normal Univ, Peoples R China.
Shanghai Jiao Tong Univ, Peoples R China.
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2020 (English)In: SOLAR RRL, ISSN 2367-198X, article id 1900529Article in journal (Refereed) Epub ahead of print
Abstract [en]

Perovskite solar cells are a highly competitive candidate for next-generation photovoltaic technology. Defects in the perovskite grain boundaries and on the film surfaces however have significant impacts on both the device efficiency and environmental stability. Herein, a strategy using organic dyes as additives to passivate the defect states and produce more n-type perovskite films, thereby improving charge transport and decreasing charge recombination, is reported. Based on this strategy, the power conversion efficiency of the perovskite solar cell is significantly increased from 18.13% to 20.18% with a negligible hysteresis. Furthermore, the rich hydrogen bonds and carbonyl structures in the organic dye can significantly enhance device stability both in terms of humidity and thermal stress. The results present a promising pathway using abundant and colorful organic dyes as additives to achieve high-performance perovskite solar cells.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2020. article id 1900529
Keywords [en]
defect-passivation; efficiency; organic dyes; perovskite solar cells; stability
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-163714DOI: 10.1002/solr.201900529ISI: 000509820500001OAI: oai:DiVA.org:liu-163714DiVA, id: diva2:1394274
Note

Funding Agencies|National Science Foundation of ChinaNational Natural Science Foundation of China [11604099, 21875067, 51811530011]; Fundamental Research Funds for the Central Universities, Shanghai Ring-Star [19QA1403100]; Shanghai Science and Technology Innovation Action Plan [17JC1402500]; National Key Project for Basic Research of ChinaNational Basic Research Program of China [2017YFA0303403]; ECNU Multifunctional Platform for Innovation [003, 006]; Swedish Research CouncilSwedish Research Council [2016-05498]; Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials at Linkoping University [SFO-Mat-LiU 2009-00971]; STINT grant [CH2017-7163]

Available from: 2020-02-18 Created: 2020-02-18 Last updated: 2020-02-18

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CiteExportLink to record
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