| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Light detectable quantum-dot light emitting diodes with a V2O5 hole injection layer |
| 초록 |
Dual-functional quantum dot light emitting diodes (QLEDs) have been fabricated via controlling a vanadium oxide (V2O5) inorganic hole injection layer (HIL), which can be operated as selectable functional diodes with emission and visible-light detection. QLEDs emitted green light with a peak wavelength of 520 nm, which can achieve a maximum luminance of 31,668 cd/m2. When QLEDs operates in reverse bias, it becomes a photodetector. An increase of photocurrent was observed during the illumination of the light over 520nm wavelength. We used X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) to analyze the interfacial electronic structure of the device according to the V2O5 concentration. We observed a change of the gap state in V2O5. In conclusion, we optimized dual functional diodes and demonstrated application in visible light communication. |
| 저자 |
김태연, 김병준, 박성호, 허수빈, 신재승, 유종훈, 강성준
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| 소속 |
경희대 |
| 키워드 |
vanadium oxide; qunatum dots; light emitting diodes; photodiodes; visible light communication
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| E-Mail |
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