Open AccessPHOTO-INDUCED ABSORPTION IN POLYDIACETYLENE SINGLE CRYSTAL
Author(s) -
Jie Peng
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.1980
Subject(s) - exciton , absorption (acoustics) , materials science , excitation , single crystal , crystal (programming language) , absorption spectroscopy , molecular physics , photochemistry , optics , crystallography , chemistry , condensed matter physics , physics , quantum mechanics , computer science , programming language , composite material
Photo-induced absorption in poly (bis (p-toluene sulphonate) ester of 2,4-hexadiyne-1, 6-diol) (PDA-TS) single crystal is studied theoretically. A mechanism of photo-induced absor-ption is proposed as exciton excitation. The binding energies for single and triple excitons are calculated and the photo-induced absorption peak at 1.35eV is considered as resulting from the transition 3Ag→3Bu. This agrees with experimental data.