摘要
为了实现硅基光电子集成,在多孔硅衬底上制备有机发光器件是一种很有优势的方法。采用匀胶机涂布法在多孔硅中嵌入了新型共轭有机聚合物聚(9,9-二辛基)-2,7-芴-co-N-(4-(2-苯基喹喔啉)苯)-4,4′-二苯胺(PFTQ),对比研究了多孔硅,PFTQ/多孔硅,PFTQ/硅以及PFTQ在甲苯溶液中的光致发光特性。实验结果表明:PFTQ/多孔硅复合膜光致发光强度是PFTQ/硅的2倍,而且相比在甲苯溶液中的PFTQ和PFTQ/硅,发光峰值有所红移,分析认为这是由于共轭聚合物在固态时有效共轭程度增加所致,并且与多孔硅中的激发载流子转移到聚合物分子上形成复合发光有关。
In order to develop silicon-based photoelectronic integration,it is a feasible method to fabricate organic semiconductor devices on the substrate of porous silicon（PSi）.New conjugated polymer Poly[（9,9-dioctyl）-2,7-fluorene-co-N-4-（2-phenylquinoxaline）phenyl-4,4＇-diphenylamine]（PFTQ）film was coated onto the surface of PSi by spin-coated method.The photoluminescence of PSi,PFTQ/PSi,PFTQ/Si,and PFTQ in toluene was investigated comparatively.The experimental results show that the luminescence intensity of PFTQ/PSi is 2 times of that of PFTQ/Si.And compared with PFTQ in toluene and PFTQ/Si,the photoluminescence spectra of PFTQ/PSi show a red shift,which can be attributed to the enhancement of conjugate of polymer in solid state,and it is also related with the phenomenon that carriers（holes and electrons）in PSi transfer to the polymer molecule to emit light.
出处
《半导体光电》
CAS
CSCD
北大核心
2010年第4期567-569,574,共4页
Semiconductor Optoelectronics
基金
国家自然科学基金项目(60968002)
教育部新世纪优秀人才支持计划项目(NCET-05-0897)
新疆维吾尔自治区高校科学研究计划项目(XJEDU2006110)
关键词
共轭聚合物
多孔硅
光致发光
PFTQ
conjugated polymer
porous silicon
photoluminescence
PFTQ
