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고분자구조 및 물성
  발표구분
포스터발표Poster presentation
  발표장치
Poster
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Synthesis and Characterization of Novel Structures via Green Selective OPD with Absorption Wavelength Selectivity
  공동저자
  • 최창은 (경상국립대학교, -, 회원)
  • 성민재 (경상국립대학교, 비회원)
  • 윤성원 (중앙대학교, 비회원)
  • 권순기 (경상국립대학교, 회원)
  • 김윤희 (경상국립대학교, 회원)
  • 정대성 (중앙대학교, 비회원)
  발표자
최창은 (경상국립대학교 , Email: cy*******@gm*******, 전화: ********1652
  연구책임자
김윤희 (경상국립대학교 , Email: yk**@gn*******, 전화: *********5296
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  발표자료 수집·활용에 대한 동의서
본인은 학회 기간 동안 발표자료 수집 및 (동)영상 저장과 송출에 대하여 동의합니다.
Synthesis and Characterization of Novel Structures via Green Selective OPD with Absorption Wavelength Selectivity
최창은, 성민재, 윤성원1, 권순기, 김윤희, 정대성1
경상국립대학교; 1중앙대학교
An image sensor is a photoelectric conversion device using semiconductor materials used in cameras, photocopiers, and medical diagnostic devices. Currently, an image sensor uses a Si photodiode as a core conversion element for a unit pixel. However, in recent years, the demand for ultra-high-definition image sensors now requires sub-micron-sized image pixels, which cannot be realized with Si photodiodes. Since the Si photodiode has a low absorption coefficient for visible light due to an indirect band gap, an active layer of several μm, which is undesirable, must be formed thickly in order to secure a sufficient amount of light absorption. In addition, color filters are required to impart color selectivity to each pixel due to the chromatic absorptive properties of Si. Since the color filter itself absorbs the incident light to some extent, the quantum efficiency of the final device is greatly reduced. In addition, installing color filters expands the light path and increases the overall volume of the image sensor, reducing the integrity of the image pixels. Recently, organic semiconductors have been reported to replace the role of Si in the field of photodiodes in order to overcome the disadvantages of Si. Since the organic semiconductor absorbs light through the HOMO-LUMO transition of electrons, the absorption coefficient for the entire visible light is high, so that the thickness of the active layer can be made low thickness. Also, there is the potential for color-selective absorption for R/G/B because organic semiconductors can fine-tune the absorption range. This is a great advantage compared to Si as a photoactive layer in a photodiode because it does not require a color filter. In this work, we synthesized a donor with novel green selectivity. The general characteristics of the unit are its planar molecular structure, high atmospheric pressure stability and strong electron donating ability, all of which can be related to its excellent electrical properties. It has been found that with appropriate acceptor units and synthesis, it is possible to have a narrow absorption band for the green range.
Keywords: -