TY - JOUR
T1 - Photoinduced generation of electron anions in H-doped nanoporous oxide 12CaO·7 Al2 O3
T2 - Toward an optically controlled formation of electrides
AU - Sushko, Peter V.
AU - Shluger, Alexander L.
AU - Hayashi, Katsuro
AU - Hirano, Masahiro
AU - Hosono, Hideo
N1 - Funding Information:
The authors wish to thank J. L. Gavartin, I. V. Abarenkov, A. S. Foster, and A. M. Stoneham for valuable discussions. The computer time on the HPCx facility was awarded to the Materials Chemistry consortium under EPSRC Grant No. GR∕S13422∕01. This work is supported by the Grant-in-Aid for Creative Scientific Research No. 16GS0205 from the Japanese Ministry of Education, Culture, Sports, Science, and Technology.
PY - 2005/2/28
Y1 - 2005/2/28
N2 - We suggest, on the basis of detailed ab initio calculations of both ground and photoexcited states of H-doped 12CaO·7 Al2 O3 (C12A7:H), that stable high-conductivity regions can be optically generated in this insulating system. Each H- ion in C12A7:H can, under photoirradiation at 3.8-4.5 eV, produce up to two electrons and a proton that binds to the lattice network and forms OH-. Mobile electrons play a role of anions in this system. They move over subnanosized cages of the C12A7 lattice via polaron hopping. The insulating state is reversibly restored upon heating to 300 °C.
AB - We suggest, on the basis of detailed ab initio calculations of both ground and photoexcited states of H-doped 12CaO·7 Al2 O3 (C12A7:H), that stable high-conductivity regions can be optically generated in this insulating system. Each H- ion in C12A7:H can, under photoirradiation at 3.8-4.5 eV, produce up to two electrons and a proton that binds to the lattice network and forms OH-. Mobile electrons play a role of anions in this system. They move over subnanosized cages of the C12A7 lattice via polaron hopping. The insulating state is reversibly restored upon heating to 300 °C.
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U2 - 10.1063/1.1871359
DO - 10.1063/1.1871359
M3 - Article
AN - SCOPUS:17044378215
SN - 0003-6951
VL - 86
SP - 1
EP - 3
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 9
M1 - 092101
ER -