Alkali acetate-assisted enhanced electronic coupling in CsPb₃ perovskite quantum dot solids for improved photovoltaics
DC Field | Value | Language |
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dc.contributor.author | Kim, Jigeon | - |
dc.contributor.author | Koo, Bonkee | - |
dc.contributor.author | Kim, Wook Hyun | - |
dc.contributor.author | Choi, Jongmin | - |
dc.contributor.author | Choi, Changsoon | - |
dc.contributor.author | Lim, Sung Jun | - |
dc.contributor.author | Lee, Jong-Soo | - |
dc.contributor.author | Kim, Dae-Hwan | - |
dc.contributor.author | Ko, Min Jae | - |
dc.contributor.author | Kim, Younghoon | - |
dc.date.accessioned | 2021-08-03T02:55:33Z | - |
dc.date.available | 2021-08-03T02:55:33Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2019-12 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/32799 | - |
dc.description.abstract | Fully inorganic CsPbI(3 )perovskite quantum dots (CsPbI3-PQDs) are known as the best-performing photovoltaic absorber in colloidal quantum dot solar cells. This is achieved by improving the cubic-phase-stabilization and electronic-coupling in CsPbI3-PQD solids. In conventional approaches, the hydrolysis of methyl acetate (MeOAc) resulting in acetic acid and methanol as intermediate substances plays a key role in replacing long-chain hydrocarbons with short-chain ligands, which improves charge transport in the CsPbI3-PQD solids. However, CsPbI3-PQDs suffer from lattice distortion and instability under acidic conditions including protons and polar media, leading to CsPbI3-PQD fusion and poor photovoltaic performance. Herein, we report that electronic coupling and photovoltaic performance of CsPbI3-PQD solids are improved by efficient removal of long-chain oleate ligands using a solution of sodium acetate (NaOAc) in MeOAc, which results in the direct generation of OAc ions without forming protons and methanol. NaOAc-based ligand exchange of CsPbI3-PQDs enables preservation of their nanocrystal size without fusion and minimization of surface trap states originating from metal hydroxide formation on their surfaces. Consequently, the best solar cell comprising NaOAc-treated CsPbI3-PQDs shows an improved device performance with a power conversion efficiency (PCE) of 13.3%, as compared with a lead nitrate-treated control device (12.4% PCE). | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.title | Alkali acetate-assisted enhanced electronic coupling in CsPb₃ perovskite quantum dot solids for improved photovoltaics | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ko, Min Jae | - |
dc.identifier.doi | 10.1016/j.nanoen.2019.104130 | - |
dc.identifier.scopusid | 2-s2.0-85072693517 | - |
dc.identifier.wosid | 000503062400050 | - |
dc.identifier.bibliographicCitation | NANO ENERGY, v.66, pp.1 - 10 | - |
dc.relation.isPartOf | NANO ENERGY | - |
dc.citation.title | NANO ENERGY | - |
dc.citation.volume | 66 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 10 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | ALPHA-CSPBI3 PEROVSKITE | - |
dc.subject.keywordPlus | HALIDE PEROVSKITES | - |
dc.subject.keywordPlus | TRANSPORT LAYER | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordAuthor | CsPbI3 perovskites | - |
dc.subject.keywordAuthor | Colloidal quantum dots | - |
dc.subject.keywordAuthor | Solids-state ligand exchange | - |
dc.subject.keywordAuthor | Sodium acetate | - |
dc.subject.keywordAuthor | Solar cells | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2211285519308377?via%3Dihub | - |
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