项目名称: 窄带隙梯形和盘状共轭大分子材料的设计、合成与性能研究
项目编号: No.21474105
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 数理科学和化学
项目作者: 乔文强
作者单位: 中国科学院长春应用化学研究所
项目金额: 82万元
中文摘要: 本项目拟开展窄带隙梯形和盘状的、特别是光谱响应波长范围在近红外光区的共轭大分子的设计、可控合成以及性能调控等方面的研究工作。以大尺寸的电子受体分子为核心,利用共轭效应和电子效应的协同作用,引入电子给体基团,从而获得最大吸收波长在1000 纳米以上、具有近红外光响应、加工性能优异、载流子迁移率高的系列有机大分子。将这些大分子化合物作为活性层材料,制备晶体管器件和光伏型光探测器器件,研究这两类具有不同拓扑结构的大共轭分子光电性能与其分子结构、聚集态结构之间的可调控关系,进而指导该类材料的分子结构设计、器件制备以及性能优化。通过本项目的研究,有助于解决有机光电材料特别是近红外光电材料载流子迁移率低、光电转换效率低等问题。
中文关键词: 窄带隙;梯形分子;盘状分子;近红外;光电探测器
英文摘要: This proposed project intends to design, synthesize and study a class of low-bandgap, ladder-type and disc-like conjugated large molecules especially with a spectral response in the near-infrared region. The objective of research is to obtain a series of processable large molecules having a maximal absorption over 1000 nm, good near-infrared spectral response and high carrier mobility, by using large-sized, electron-accepting molecules as a core, by incorporating the electron-donating groups into the core and by utilizing the electron/charge transfer effects. Using the transistor and photodetector devices, we will further study the correlation between the structure of these large molecules in their condensed state and optoelectronic properties, in order to guide the molecular design, device work and property optimization. This project addresses some scientific issues associated with near-infrared organic materials such as low mobility and low photon-electron conversion efficiency.
英文关键词: low bandgap;ladder-type molecule;disc-like molecule;near infrared;photodetector