| 학회 | 한국재료학회 |
| 학술대회 | 2019년 가을 (10/30 ~ 11/01, 삼척 쏠비치 호텔&리조트) |
| 권호 | 25권 2호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Flexible InGaN/GaN nanorod LED planar light source: fabrication and characterizations |
| 초록 | Large-scale and flexible electronic and optoelectronic devices have recently attracted much attention for use in wearable displays, solar cells, sensors, and biomedical devices. For the bendable and wearable devices, organic films have widely been employed due to their excellent scalability and flexibility. Meanwhile, achieving flexible devices using inorganic films is still very challenging because of the rigidity and brittleness inherent to inorganic films and single-crystalline substrates. Nevertheless, high-quality inorganic semiconductors are crucial to achieving better performance and long-term stability of devices. GaN-based LEDs have been widely used for high-performance solid-state lighting systems due to their high internal and external quantum efficiencies, low power consumption, and long-term stability. In this presentation, we aim at fabricating a flexible white InGaN/GaN nanorod LED planar light source integrated with colloidal quantum dots and metal nanoparticles (to be named hereafter, FlexLed). Within 1 cm2 area, several hundred millions of InGaN/GaN nanorod LEDs are evolved into planar surface lighting or direct-view displays, as well as polarized light sources. The fabrication of FlexLed is divided into 5 main processes: The InGaN/GaN LED structures are epitaxially grown at first, axial nanorods are fabricated through top-down approach, transparent polymer material is coated to mechanically support the nanorods after substrate separation, transparent conducting layers are deposited, and the substrate is finally detached. We also integrate the polymer support with semiconductor CQDs for color conversion (green and red) and metal NPs for emission enhancement by means of localized surface plasmon (LSP). Detailed characterization results will be discussed at the conference. |
| 저자 | 김태환, 박지혜, 이인환 |
| 소속 | 고려대 |
| 키워드 | Flexible; InGaN; Nanorod; LED |
