Bright blue emission from Te-doped ZnS nanowires |
| |
| Authors: | Sangdan Kim Mi Jung Ki-Seok An |
| |
| Affiliation: | a Department of Physics, Kyonggi University, Suwon, Kyonggi-Do 443-760, Republic of Korea
b Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea |
| |
| Abstract: | Optical properties of Te-doped ZnS (ZnS:Te) nanowires (NWs) synthesized by a thermal chemical vapor deposition method were investigated by cathodeluminescence and photoluminescence (PL) measurements. ZnS:Te NWs exhibit the blue emission with the maximum peak at ∼440 nm at room temperature. We calculated Te-induced states on the valence band and conduction band in ZnS bulk crystal compared with PL peaks of ZnS:Te NWs. Temperature-dependent PL indicated that the activation energy of electron confined in ZnS:Te NWs is 85 meV. Blue light-emitting dot matrix displays were also fabricated using ZnS:Te NWs. This result suggested that ZnS:Te NWs could be applied as a blue-color-emitter on display devices. |
| |
| Keywords: | Te-doped ZnS nanowires Luminescence Blue light emission Activation energy Field emission |
| 本文献已被 ScienceDirect 等数据库收录！ |
