Natural nanostructures in ionic semiconductors

Toshio Kamiya; Hiromichi Ohta; Hidenori Hiramatsu; Katsuro Hayashi; Kenji Nomura; Satoru Matsuishi; Kazushige Ueda; Masahiro Hirano; Hideo Hosono

doi:10.1016/S0167-9317(04)00171-6

Natural nanostructures in ionic semiconductors

Toshio Kamiya, Hiromichi Ohta, Hidenori Hiramatsu, Katsuro Hayashi, Kenji Nomura, Satoru Matsuishi, Kazushige Ueda, Masahiro Hirano, Hideo Hosono

Research output: Contribution to journal › Conference article › peer-review

19 Citations (Scopus)

Abstract

Nanostructures naturally formed in oxide semiconductor crystals are discussed in relation to their electronic structure and properties. Three different crystals are studied: (i) layered oxychalcogenides LnCuOCh (Ln = lanthanide, Ch = chalcogen), (ii) homologous series layered oxides RMO ₃(ZnO)_m (R = In, Lu etc., M = In, Ga etc., m = integer), and (iii) nanoporous crystal 12CaO7 · Al₂O₃ (C12A7). Coexistence of moderately large mobility, intense photoluminescence arising from room-temperature exciton and high-density hole is explained by a natural modulation doping structure in LnCuOCh. C12A7 exhibits different properties by replacing free O^2- ions anions clathrated in its subnanometer-sized cages with O^-, H^-, and electron. The electronic structures of the clathrated anions were investigated by ab initio calculations and discussed in terms of possible quantum structures and applications.

Original language	English
Pages (from-to)	620-626
Number of pages	7
Journal	Microelectronic Engineering
Volume	73-74
DOIs	https://doi.org/10.1016/S0167-9317(04)00171-6
Publication status	Published - Jan 1 2004
Externally published	Yes
Event	Micro and Nano Engineering 2003 - Cambridge, United Kingdom Duration: Sept 22 2003 → Sept 25 2003

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Surfaces, Coatings and Films
Electrical and Electronic Engineering

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10.1016/S0167-9317(04)00171-6

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title = "Natural nanostructures in ionic semiconductors",

abstract = "Nanostructures naturally formed in oxide semiconductor crystals are discussed in relation to their electronic structure and properties. Three different crystals are studied: (i) layered oxychalcogenides LnCuOCh (Ln = lanthanide, Ch = chalcogen), (ii) homologous series layered oxides RMO 3(ZnO)m (R = In, Lu etc., M = In, Ga etc., m = integer), and (iii) nanoporous crystal 12CaO7 · Al2O3 (C12A7). Coexistence of moderately large mobility, intense photoluminescence arising from room-temperature exciton and high-density hole is explained by a natural modulation doping structure in LnCuOCh. C12A7 exhibits different properties by replacing free O2- ions anions clathrated in its subnanometer-sized cages with O-, H-, and electron. The electronic structures of the clathrated anions were investigated by ab initio calculations and discussed in terms of possible quantum structures and applications.",

author = "Toshio Kamiya and Hiromichi Ohta and Hidenori Hiramatsu and Katsuro Hayashi and Kenji Nomura and Satoru Matsuishi and Kazushige Ueda and Masahiro Hirano and Hideo Hosono",

year = "2004",

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doi = "10.1016/S0167-9317(04)00171-6",

language = "English",

volume = "73-74",

pages = "620--626",

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note = "Micro and Nano Engineering 2003 ; Conference date: 22-09-2003 Through 25-09-2003",

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TY - JOUR

T1 - Natural nanostructures in ionic semiconductors

AU - Kamiya, Toshio

AU - Ohta, Hiromichi

AU - Hiramatsu, Hidenori

AU - Hayashi, Katsuro

AU - Nomura, Kenji

AU - Matsuishi, Satoru

AU - Ueda, Kazushige

AU - Hirano, Masahiro

AU - Hosono, Hideo

PY - 2004/1/1

Y1 - 2004/1/1

N2 - Nanostructures naturally formed in oxide semiconductor crystals are discussed in relation to their electronic structure and properties. Three different crystals are studied: (i) layered oxychalcogenides LnCuOCh (Ln = lanthanide, Ch = chalcogen), (ii) homologous series layered oxides RMO 3(ZnO)m (R = In, Lu etc., M = In, Ga etc., m = integer), and (iii) nanoporous crystal 12CaO7 · Al2O3 (C12A7). Coexistence of moderately large mobility, intense photoluminescence arising from room-temperature exciton and high-density hole is explained by a natural modulation doping structure in LnCuOCh. C12A7 exhibits different properties by replacing free O2- ions anions clathrated in its subnanometer-sized cages with O-, H-, and electron. The electronic structures of the clathrated anions were investigated by ab initio calculations and discussed in terms of possible quantum structures and applications.

AB - Nanostructures naturally formed in oxide semiconductor crystals are discussed in relation to their electronic structure and properties. Three different crystals are studied: (i) layered oxychalcogenides LnCuOCh (Ln = lanthanide, Ch = chalcogen), (ii) homologous series layered oxides RMO 3(ZnO)m (R = In, Lu etc., M = In, Ga etc., m = integer), and (iii) nanoporous crystal 12CaO7 · Al2O3 (C12A7). Coexistence of moderately large mobility, intense photoluminescence arising from room-temperature exciton and high-density hole is explained by a natural modulation doping structure in LnCuOCh. C12A7 exhibits different properties by replacing free O2- ions anions clathrated in its subnanometer-sized cages with O-, H-, and electron. The electronic structures of the clathrated anions were investigated by ab initio calculations and discussed in terms of possible quantum structures and applications.

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U2 - 10.1016/S0167-9317(04)00171-6

DO - 10.1016/S0167-9317(04)00171-6

M3 - Conference article

AN - SCOPUS:2542490676

SN - 0167-9317

VL - 73-74

SP - 620

EP - 626

JO - Microelectronic Engineering

JF - Microelectronic Engineering

T2 - Micro and Nano Engineering 2003

Y2 - 22 September 2003 through 25 September 2003

ER -

Natural nanostructures in ionic semiconductors

Abstract

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