Electroluminescence enhancement in dry- Processed organic-inorganic layered perovskite films

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Abstract

Organic-inorganic layered perovskite, (C6H5C 2H4NH3)2PbI4, was grown on silica substrates or indium tin oxide (ITO) substrates by vacuum vapor deposition. High-quality layered perovskite films, which showed sharp and intense exciton peaks, were obtained when substrate surfaces were covered with either an octadecyltrichlorosilane (OTS) monolayer or a vacuum-deposited copper phthalocyanine (CuPc) layer. Light-emitting devices (LEDs) with structures of ITO/OTS/layered perovskite/2,9-dimethyl-4,7-diphenyl-l,10-phenanthroline (BCP)/2,4-pentanedionato lithium (Li acac)/Al, ITO/CuPc/ layered perovskite/BCP/Li acac/Al, and ITO/layered perovskite/BCP/Li acac/Al were fabricated. Sharp electroluminescence (EL) peaks from excitons stabilized in a quantum well structure were observed in each LED at 105 K. The LED with the CuPc layer exhibited the highest EL intensity and efficiency among the three LEDs. This EL enhancement is ascribed to the improvement in film properties and a decrease in the height of the hole injection barrier induced by growing the layered perovskite film on a CuPc layer.

Original languageEnglish
Pages (from-to)1457-1461
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
Volume44
Issue number3
DOIs
Publication statusPublished - Mar 2005

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Electroluminescence
electroluminescence
indium oxides
Perovskite
tin oxides
Tin oxides
Indium
augmentation
excitons
Excitons
vacuum deposition
Substrates
Vacuum deposition
Vapor deposition
lithium
quantum wells
vapor deposition
injection
silicon dioxide
copper

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Electroluminescence enhancement in dry- Processed organic-inorganic layered perovskite films",
abstract = "Organic-inorganic layered perovskite, (C6H5C 2H4NH3)2PbI4, was grown on silica substrates or indium tin oxide (ITO) substrates by vacuum vapor deposition. High-quality layered perovskite films, which showed sharp and intense exciton peaks, were obtained when substrate surfaces were covered with either an octadecyltrichlorosilane (OTS) monolayer or a vacuum-deposited copper phthalocyanine (CuPc) layer. Light-emitting devices (LEDs) with structures of ITO/OTS/layered perovskite/2,9-dimethyl-4,7-diphenyl-l,10-phenanthroline (BCP)/2,4-pentanedionato lithium (Li acac)/Al, ITO/CuPc/ layered perovskite/BCP/Li acac/Al, and ITO/layered perovskite/BCP/Li acac/Al were fabricated. Sharp electroluminescence (EL) peaks from excitons stabilized in a quantum well structure were observed in each LED at 105 K. The LED with the CuPc layer exhibited the highest EL intensity and efficiency among the three LEDs. This EL enhancement is ascribed to the improvement in film properties and a decrease in the height of the hole injection barrier induced by growing the layered perovskite film on a CuPc layer.",
author = "Toshinori Matsusima and Katsuhiko Fujita and Tetsuo Tsutsui",
year = "2005",
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AB - Organic-inorganic layered perovskite, (C6H5C 2H4NH3)2PbI4, was grown on silica substrates or indium tin oxide (ITO) substrates by vacuum vapor deposition. High-quality layered perovskite films, which showed sharp and intense exciton peaks, were obtained when substrate surfaces were covered with either an octadecyltrichlorosilane (OTS) monolayer or a vacuum-deposited copper phthalocyanine (CuPc) layer. Light-emitting devices (LEDs) with structures of ITO/OTS/layered perovskite/2,9-dimethyl-4,7-diphenyl-l,10-phenanthroline (BCP)/2,4-pentanedionato lithium (Li acac)/Al, ITO/CuPc/ layered perovskite/BCP/Li acac/Al, and ITO/layered perovskite/BCP/Li acac/Al were fabricated. Sharp electroluminescence (EL) peaks from excitons stabilized in a quantum well structure were observed in each LED at 105 K. The LED with the CuPc layer exhibited the highest EL intensity and efficiency among the three LEDs. This EL enhancement is ascribed to the improvement in film properties and a decrease in the height of the hole injection barrier induced by growing the layered perovskite film on a CuPc layer.

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