DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, Mingue | ko |
dc.contributor.author | Lee, Ho Seung | ko |
dc.contributor.author | Sim, Young Chul | ko |
dc.contributor.author | Cho, Yong-Hoon | ko |
dc.contributor.author | Choi, Kyung Cheol | ko |
dc.contributor.author | Shin, Byungha | ko |
dc.date.accessioned | 2020-03-19T01:28:42Z | - |
dc.date.available | 2020-03-19T01:28:42Z | - |
dc.date.created | 2020-02-26 | - |
dc.date.created | 2020-02-26 | - |
dc.date.issued | 2020-01 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v.12, no.1, pp.1944 - 1952 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10203/272435 | - |
dc.description.abstract | Because of its excellent optical properties and good stability, all-inorganic halide perovskite CsPbX3 (X = I, Br, Cl) has been attracting interest for use in light-emitting diodes (LEDs). One challenge is improving the efficacy of the spatial confinement of excitons for higher luminescence efficiency. Here, we present a simple yet very effective strategy to form fine-grain-structured CsPbBr3 polycrystalline films prepared by thermal co-evaporation. The strategy involves controlling growth kinetics by adjusting the deposition rate, which, along with growth temperature, determines the nucleation rate and therefore the eventual grain structure. A correlation between deposition rate and average grain size was noted except for a very large deposition rate when there were large hillocks, which we attributed to the peculiar growth behavior of PbBr2 films. The growth conditions that produced a nanoscale grain structure and textured orientations without large hillocks also resulted in the highest luminescence efficiency as we anticipated. With the optimized CsPbBr3 light emitters, we demonstrate a green-light-emitting (at 524 nm) LED with a maximum current efficiency of 1.07 cd/A and an extremely narrow electroluminescence spectrum of 18 nm, a result that highlights the potential of vacuum-processed CsPbBr3 films for high-efficiency LEDs. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Modulation of Growth Kinetics of Vacuum-Deposited CsPbBr3 Films for Efficient Light-Emitting Diodes | - |
dc.type | Article | - |
dc.identifier.wosid | 000507146100200 | - |
dc.identifier.scopusid | 2-s2.0-85077125692 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 1944 | - |
dc.citation.endingpage | 1952 | - |
dc.citation.publicationname | ACS APPLIED MATERIALS & INTERFACES | - |
dc.identifier.doi | 10.1021/acsami.9b20094 | - |
dc.contributor.localauthor | Cho, Yong-Hoon | - |
dc.contributor.localauthor | Choi, Kyung Cheol | - |
dc.contributor.localauthor | Shin, Byungha | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | perovskites | - |
dc.subject.keywordAuthor | CsPbBr3 | - |
dc.subject.keywordAuthor | thermal co-evaporation | - |
dc.subject.keywordAuthor | vacuum deposition | - |
dc.subject.keywordAuthor | light-emitting diodes | - |
dc.subject.keywordAuthor | LEDs | - |
dc.subject.keywordPlus | PEROVSKITE SOLAR-CELLS | - |
dc.subject.keywordPlus | HALIDE PEROVSKITES | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | BRIGHT | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | CRYSTALLIZATION | - |
dc.subject.keywordPlus | CH3NH3PBBR3 | - |
dc.subject.keywordPlus | ORIGINS | - |
dc.subject.keywordPlus | CSPBX3 | - |
dc.subject.keywordPlus | BR | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.