LI Cai-xia, LIN Jia-qi, ZHOU Yan-ping, et al. Photoluminescence of Polyimide Films[J]. 2009, 14(6): 117-119.
DOI:
LI Cai-xia, LIN Jia-qi, ZHOU Yan-ping, et al. Photoluminescence of Polyimide Films[J]. 2009, 14(6): 117-119.DOI:
Photoluminescence of Polyimide Films
摘要
用光致发光测量装置和紫外—可见分光光度计测量了聚酰亚胺薄膜的发光强度、发光光谱和吸收光谱
研究了聚酰亚胺的光致发光性能.结果表明:聚酰亚胺的光致发光强度随测量时间呈指数衰减规律
发光光谱由荧光区、磷光区和红光及红外三个区域组成
其中700 nm附近的峰带相对较强.辐照时间增加
发光强度衰减减慢
发光峰带向长波方向移动.吸收带的最大吸收波长发生红移
由吸收边算得其光能隙约为2.76 eV.
Abstract
Photoluminescence intensity
spectrum and spectral Absorption of polyimide films were measured in PL measurement set-up and TU-1901 double beam UV-Vis spectrophotometer.PL property of PI films was studied.The results showed that: PL intensity showed exponential decay along with the measuring time.PL spectrum was consisted of fluorescent
phosphorescent and infrared region
The peak region nearby 700 nm is a little higher.Decay velocity of PL intensity reduced along with irradiation time.PL spectrum peaked at l...