کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5351525 | 1503671 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Blue/green electroluminescence from a ZnO nanorods/p-GaN heterojunction light emitting diode under different reverse bias
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Vertically aligned ZnO nanorods were directly grown on p-GaN film to form a ZnO nanorods/p-GaN heterojunction. Electroluminescence characteristics of the ZnO nanorods/p-GaN heterojunction light emitting diode (LED) operated at different reverse bias were investigated. Only green emission at around 519Â nm could be observed at 3.5Â V, and blue emission at around 468Â nm gradually appeared with the increase of reverse bias. The color of the device could be turned from green (0.31, 0.39) to blue (0.16, 0.16) by varying the reverse bias voltages. The electroluminescence mechanism of the heterojunction LED was discussed in terms of interface defects and band diagram.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 293, 28 February 2014, Pages 225-228
Journal: Applied Surface Science - Volume 293, 28 February 2014, Pages 225-228
نویسندگان
Qiu-Ming Fu, Wei Cao, Guo-Wei Li, Zhi-Dong Lin, Zhe Chen, Chuan-Bo Xu, Ya-Fang Tu, Zhi-Bin Ma,