DC Field | Value | Language |
---|---|---|
dc.contributor.author | Song, Sungwon | - |
dc.contributor.author | Yang, Seok Joo | - |
dc.contributor.author | Choi, Jinhyeok | - |
dc.contributor.author | Han, Se Gyo | - |
dc.contributor.author | Park, Kwanghee | - |
dc.contributor.author | Lee, Hansol | - |
dc.contributor.author | Min, Jiwoo | - |
dc.contributor.author | Ryu, Sunmin | - |
dc.contributor.author | Cho, Kilwon | - |
dc.date.accessioned | 2022-03-03T07:20:39Z | - |
dc.date.available | 2022-03-03T07:20:39Z | - |
dc.date.created | 2021-10-10 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/110301 | - |
dc.description.abstract | Dimensionality engineering is an effective approach to improve the stability and power conversion efficiency (PCE) of perovskite solar cells (PSCs). A two-dimensional (2D) perovskite assembled from bulky organic cations to cover the surface of three-dimensional (3D) perovskite can repel ambient moisture and suppress ion migration across the perovskite film. This work demonstrates how the thermal stability of the bulky organic cation of a 2D perovskite affects the crystallinity of the perovskite and the optoelectrical properties of perovskite solar cells. Structural analysis of (FAPbI(3))(0.95)(MAPbBr(3))(0.05) (FA = formamidinium ion, MA = methylammonium ion) mixed with a series of bulky cations shows a clear correlation between the structure of the bulky cations and the formation of surface defects in the resultant perovskite films. An organic cation with primary ammonium structure is vulnerable to a deprotonation reaction under typical perovskite-film processing conditions. Decomposition of the bulky cations results in structural defects such as iodide vacancies and metallic lead clusters at the surface of the perovskite film; these defects lead to a nonradiative recombination loss of charge carriers and to severe ion migration during operation of the device. In contrast, a bulky organic cation with a quaternary ammonium structure exhibits superior thermal stability and results in substantially fewer structural defects at the surface of the perovskite film. As a result, the corresponding PSC exhibits the PCE of 21.6% in a reverse current-voltage scan and a stabilized PCE of 20.1% with an excellent lifetime exceeding 1000 h for the encapsulated device under continuous illumination. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.relation.isPartOf | ACS Applied Materials and Interfaces | - |
dc.title | Surface Stabilization of a Formamidinium Perovskite Solar Cell Using Quaternary Ammonium Salt | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsami.1c07690 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ACS Applied Materials and Interfaces, v.13, no.31, pp.37052 - 37062 | - |
dc.identifier.wosid | 000685245800036 | - |
dc.citation.endPage | 37062 | - |
dc.citation.number | 31 | - |
dc.citation.startPage | 37052 | - |
dc.citation.title | ACS Applied Materials and Interfaces | - |
dc.citation.volume | 13 | - |
dc.contributor.affiliatedAuthor | Song, Sungwon | - |
dc.contributor.affiliatedAuthor | Yang, Seok Joo | - |
dc.contributor.affiliatedAuthor | Choi, Jinhyeok | - |
dc.contributor.affiliatedAuthor | Han, Se Gyo | - |
dc.contributor.affiliatedAuthor | Park, Kwanghee | - |
dc.contributor.affiliatedAuthor | Lee, Hansol | - |
dc.contributor.affiliatedAuthor | Min, Jiwoo | - |
dc.contributor.affiliatedAuthor | Ryu, Sunmin | - |
dc.contributor.affiliatedAuthor | Cho, Kilwon | - |
dc.identifier.scopusid | 2-s2.0-85112538677 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | HIGHLY EFFICIENT | - |
dc.subject.keywordPlus | METHYLAMMONIUM | - |
dc.subject.keywordPlus | IODIDE | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | VOLTAGE | - |
dc.subject.keywordPlus | IMPACT | - |
dc.subject.keywordPlus | LAYERS | - |
dc.subject.keywordAuthor | perovskite solar cell | - |
dc.subject.keywordAuthor | film uniformity | - |
dc.subject.keywordAuthor | decomposition mechanism | - |
dc.subject.keywordAuthor | surface passivation | - |
dc.subject.keywordAuthor | operational stability | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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