Degradation processes in encapsulated ZnS: Cu powder electroluminescent phosphors
In this paper we present experimental results of the studying degradation processes in electroluminescent panels, prepared from encapsulated ZnS:Cu powder phosphors and theoretical simulation of energy parameters for the phosphor. Energy band diagrams ZnS, Cu₂S, ZnS-Cu₂₋xS heterojunction and Cu-Z...
Збережено в:
| Дата: | 2007 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2007
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| Назва видання: | Semiconductor Physics Quantum Electronics & Optoelectronics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/118337 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Degradation processes in encapsulated ZnS: Cu powder electroluminescent phosphors / K.O. Popovych // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2007. — Т. 10, № 4. — С. 77-80. — Бібліогр.: 12 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | In this paper we present experimental results of the studying degradation
processes in electroluminescent panels, prepared from encapsulated ZnS:Cu powder
phosphors and theoretical simulation of energy parameters for the phosphor. Energy band
diagrams ZnS, Cu₂S, ZnS-Cu₂₋xS heterojunction and Cu-ZnS metal-semiconductor
junction have been constructed and cohesive energies for Zn-S, Cu-S, Zn-O, Cu-O and
Zn-Cu bonds have been calculated by the method based on a linear combination of
atomic orbitals and pseudo-potential. Time dependences of brightness have been found to
adequately fit a two-component exponential dependence. The first part of the exponential
curve has been attributed to the diffusion processes taking place in Cu₂₋xS, and the second
one to the diffusion of Cu in ZnS matrix. |
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