Ultrafast Spectroscopic Studies of Semiconducting Polymer Blends: The Route to High Efficiency Photoluminescence

半导体聚合物共混物的超快光谱研究：高效光致发光之路

• 批准号: 9510387
• 负责人: Alan Heeger
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-11-01 至 1998-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510387&HistoricalAwards=false
• 关键词: Ultrafast; Spectroscopic; Studies; Semiconducting; Polymer

Heeger 9510387 The discovery of polymer light-emitting diodes (LEDs) with relatively high quantum efficiency has opened an important new direction for research and has expanded the possible applications for conducting polymers in the area of active light sources. With a goal of achieving high quantum efficiency electroluminescence in polymer LEDs, this research program addresses the basic physics of pi-electrons in conjugated polymers. The experimental methods focus on the use of ultrafast time-resolved spectroscopy (resolution less than a pico- second), including sub pico-second time-resolved photoinduced absorption, sub pico-second time-resolved luminescence and pump-probe experiments to characterize the possible role of stimulated emission. The research will focus on dilute blends of semiconducting luminescent polymers. %%% The discovery of polymer light-emitting diodes (LEDs) with relatively high quantum efficiency has opened an important new direction for research and has expanded the possible applications for conducting polymers in the area of active light sources. The potential importance of this area had been recently highlighted in President Clinton's report on Science in the National Interest ("Polymers that Glow"). With a goal of achieving high quantum efficiency electroluminescence in polymer LEDs, this research program addresses the basic physics of pi-electrons in conjugated polymers through studies of photoinduced luminescence and photo-induced charge/energy transfer. The experimental methods focus on the use of ultrafast time-resolved spectroscopy resolution (less than a pico-second). ***

Heeger 9510387 具有相对较高量子效率的聚合物发光二极管（LED）的发现为研究开辟了一个重要的新方向，并扩展了导电聚合物在主动光源领域的可能应用。该研究项目的目标是在聚合物 LED 中实现高量子效率电致发光，研究共轭聚合物中π电子的基本物理原理。实验方法侧重于使用超快时间分辨光谱（分辨率小于皮秒），包括亚皮秒时间分辨光致吸收、亚皮秒时间分辨发光和泵浦探针实验来表征受激发射的可能作用。该研究将集中于半导体发光聚合物的稀释混合物。 %%% 具有相对较高量子效率的聚合物发光二极管（LED）的发现为研究开辟了一个重要的新方向，并扩大了导电聚合物在主动光源领域的可能应用。克林顿总统最近关于国家利益的科学报告（“发光的聚合物”）强调了这一领域的潜在重要性。为了在聚合物 LED 中实现高量子效率电致发光，该研究项目通过研究光致发光和光致电荷/能量转移来解决共轭聚合物中 π 电子的基本物理问题。实验方法侧重于使用超快时间分辨光谱分辨率（小于皮秒）。 ***