Zobrazeno 1 - 10
of 71
pro vyhledávání: '"J.C. Ronfard-Haret"'
Autor:
J.C Ronfard-Haret
Publikováno v:
Solid State Ionics. 167:355-366
The electrical and luminescent properties of a series of ZnO pellets doped with 0.1% Mn, sintered at 1100, 1200, 1300 and 1400 °C and furnace cooled have been studied. The impedance spectra of the pellets can result from a grain boundary capacitance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1da774397d46b98e7292314284f08538
https://doi.org/10.1016/j.ssi.2004.01.019
https://doi.org/10.1016/j.ssi.2004.01.019
Autor:
J.C. Ronfard-Haret
Publikováno v:
Journal of Luminescence. 104:1-12
The electric and luminescent properties of a series of polycrystalline sintered ZnO pellets containing small amounts of Er and/or Mn oxide have been studied with reference to the brick layer-grain boundary model put forward for ZnO-based varistors. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89baa5045a124e20f133446175b00e53
https://doi.org/10.1016/s0022-2313(02)00574-4
https://doi.org/10.1016/s0022-2313(02)00574-4
Autor:
J.C. Ronfard-Haret
Publikováno v:
Journal of Luminescence. 104:103-114
The electrical and luminescent properties of a series of polycrystalline sintered ZnO pellets containing small amounts of Bi and Er oxides have been studied as a function of the sintering temperature, between 950°C and 1100°C. The current–voltage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::705e704cd0bd3accd555b13b3f7aef30
https://doi.org/10.1016/s0022-2313(02)00685-3
https://doi.org/10.1016/s0022-2313(02)00685-3
Publikováno v:
Journal of Physics and Chemistry of Solids. 62:565-578
The structure and the electrical and luminescence properties of polycrystalline sintered ZnO pellets containing small amounts of Bi, Mn and Er oxides have been studied. The electric behaviour of the pellets not containing Bi 2 O 3 is ohmic or nearly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e9a6918412404bd8836395582593967
https://doi.org/10.1016/s0022-3697(00)00216-x
https://doi.org/10.1016/s0022-3697(00)00216-x
Publikováno v:
Journal of Luminescence. 91:71-77
The room temperature triboluminescence of Er3+, Eu3+, Ho3+, Sm3+ and Tm3+ ions in the 400–850 nm range was observed during the abrasion of sintered polycrystalline ZnO samples containing the rare earth (RE) sesquioxides. The triboluminescence spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4de5ba00bddc78ce56ede07224d5307
https://doi.org/10.1016/s0022-2313(00)00204-0
https://doi.org/10.1016/s0022-2313(00)00204-0
Publikováno v:
Journal of Luminescence. 75:35-49
The photoluminescence of polycrystalline sintered ZnO codoped with Li + and trivalent rate-earth (RE 3+ ) ions (Dy 3+ , Er 3+ , Eu 3+ , Ho 3+ , Nd 3+ , Sm 3+ and Tm 3+ ) has been studied. The luminescence spectra depend upon the nature of the rare ea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b8495ca9b865c8f1368c50befc521f9
https://doi.org/10.1016/s0022-2313(97)00093-8
https://doi.org/10.1016/s0022-2313(97)00093-8
Publikováno v:
Journal of Physics and Chemistry of Solids. 57:1869-1879
Trivalent rare earth ions (Eu 3+ , Tm 3+ , Er 3+ )-doped zinc oxide ceramics have been prepared. They were found to be luminescent when submitted to electric fields and the luminescence spectra are those of the trivalent rare earth ions. Compared to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d11cc8aca455ad9c13e877c2f040ec5
https://doi.org/10.1016/s0022-3697(96)00067-4
https://doi.org/10.1016/s0022-3697(96)00067-4
Publikováno v:
The Journal of Physical Chemistry. 99:5674-5679
The electroluminescence of Dy{sup 3+} and Sm{sup 3+} ions inserted in polycrystalline semiconducting zinc oxide was studied using a rare earth-doped sintered zinc oxide disc sandwiched between two metallic solders. This device, which corresponds to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b3bee87a91669cdeaa3080feadb94b3
https://doi.org/10.1021/j100015a060
https://doi.org/10.1021/j100015a060
Publikováno v:
Solid State Communications. 89:859-863
The characteristic luminescence of Ho3+ ions has been observed in a ZnO varistor-type structure containing holmium oxide. This luminescence evidences the presence of hot electrons as responsible for the excitation of the trivalent rare earth ions. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a974b97558443cc81f7fc4cb7c0ca597
https://doi.org/10.1016/0038-1098(94)90071-x
https://doi.org/10.1016/0038-1098(94)90071-x
Publikováno v:
Chemical Physics Letters. 213:54-58
Sintered polycrystalline semiconducting zinc oxide has been doped with Tm 3+ ions and mounted as electrodes. Their electroluminescence, studied under anodic polarization shows the characteristic luminescence spectrum of the doping Tm 3+ . The excitat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39af351e6b60e04c9c6764f0a306e986
https://doi.org/10.1016/0009-2614(93)85417-m
https://doi.org/10.1016/0009-2614(93)85417-m