표제지
목차
요약 10
Abstract 11
제1장 서론 12
제2장 이론적 배경 14
2.1. 유기 재료 기반 가시광 통신 (All-organic Visible Light Communication) 14
2.2. 전면 발광 유기 발광 다이오드 (Top Emission Organic Light-Emitting Diodes, TEOLEDs) 17
2.3. 형광 (Fluorescence) 23
제3장 실험방법 25
3.1. RGB selective Organic Photodiodes 제작 25
3.2. RGB OPDs 특성 분석 28
3.3. RGB 유기 박막 제작 28
3.4. Transient PL 분석 28
3.5. 각도별 PL 분석 28
3.6. RGB selective Organic Light Emitting Diodes 제작 29
3.7. RGB OLEDs 전기 광학적 특성 분석 31
3.8. All-organic Visible Light Communication system 구성 32
제4장 결과 및 고찰 34
4.1. RGB OPDs의 특성 및 결과 34
4.2. RGB 발광체의 특성 및 결과 37
4.3. RGB OLEDs의 특성 및 결과 42
4.4. All-organic VLC system의 결과 48
제5장 결론 55
제6장 참고문헌 57
Table 3.1. Thickness of RGB OPDs etalon electrodes. 27
Table 4.1. Photophysical data of RGB emitters. 41
Table 4.2. Device performance of RGB OLEDs. 47
Fig 2.1. VLC system overview. 16
Fig 2.2. Light emission mechanism of OLEDs. 19
Fig 2.3. Structures of (a) Bottom emission. (b) Top emission. 20
Fig 2.4. (a) Spectral shape of BEOLED and TEOLED. (b) Angle-dependent emission and the intensity of the cavity effect. 21
Fig 2.5. Structures of R/G/B TEOLEDs. 22
Fig 2.6. Light mechanism in EML of (a) Fluorescence. (b) Phosphorescence. (c) TADF. (d) HF. 24
Fig 3.1. Structure of OPDs. 26
Fig 3.2. (a) Band diagram of RGB OLEDs. (b) Molecular structures of the organic materials. 30
Fig 3.3. (a) Structure of the All-organic VLC system. (b) Circuit diagram of the TX OLED driver. (c) Circuit diagram of the... 33
Fig 4.1. (a) Dark and illuminated J-V characteristics of OPDs layer thickness. (b) Detectivity spectra of the RGB OPDs. 36
Fig 4.2. PL Spectra of (a) Blue emitter. (b) Green emitter. (c) Red emitter. 38
Fig 4.3. Transient PL decays of RGB emitters. 39
Fig 4.4. Angle-dependent PL intensity of (a) Blue emitter. (b) Green emitter. (c) Red emitter. 40
Fig 4.5. (a) Current density-voltage-luminance (J-V-L) characteristics of RGB OLEDs. (b) Angle-dependent EL... 44
Fig 4.6. EL spectra with different viewing angles of (a) Blue OLED. (b) Green OLED. (c) Red OLED. 45
Fig 4.7. (a) External quantum efficiency-luminance (EQE-L) characteristics of RGB OLEDs. (b) Current efficiency-... 46
Fig 4.8. Photocurrent characteristics of RGB OPDs. 52
Fig 4.9. (a) Signal-to-interference ratio (SIR) result of the measured RGB 3-channel VLC system compared to the... 53
Fig 4.10. (a) Photographs of the indoor white-lighting-based VLC system. (b) Measured 3-channel VLC. 54