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Integration of photoactivated metal oxide based gas sensor with organic light emitting device: nanoscale fabrication process and light extraction techniques of optoelectronic device applied in sensor platform
Date Issued
2014
Date
2014
Author(s)
Ho, Yu-Hsuan
Abstract
In the dissertation, we developed three novel nanofabrication techniques to fabricate the self-aggregated floccule-like ZnO nanostructures, ZnO nanomesh, and nanogrinded WO3 nanoparticles as the gas sensing layers of the photoactivated gas sensors operated in room temperature. The proposed nanofabrication techniques not only increase the surface-to-volume ratio of the metal-oxide materials, but also improve its light absorption and the activation effects for the gas sensing. In order to integrate the photoactivated gas sensor and the activation light sources, the sensing platform with the transparent ITO interdigitated electrodes were fabricated by using conventional photolithography process. The surface-emitting light source, RGB OLED, was first applied as the activation source to achieve visible light-activated gas sensing. And we designed and fabricated three light extraction techniques applied in OLEDs to greatly improve the luminous efficiency. By applying internal and external light extraction micro-/nanostructures, the efficiency of OLEDS was increased by 100% at some specific angles.
Subjects
光激發氣體感測器
室溫操作
微機電
有機發光二極體
微奈米製程技術
Type
thesis
File(s)
No Thumbnail Available
Name
ntu-103-D00943024-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):03c308bac0ea65688000ed25bfd58789