TY - JOUR
T1 - Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission
AU - Lypenko, Dmitriy A.
AU - Aleksandrov, Alexey E.
AU - Dmitriev, Artem V.
AU - Yakimanskiy, Anton A.
AU - Kolesnikov, Ilya E.
AU - Chulkova, Tatiana G.
AU - Yakimansky, Alexander V.
AU - Tameev, Alexey R.
N1 - Publisher Copyright:
© Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences 2024.
PY - 2024/12/1
Y1 - 2024/12/1
N2 - Copolyfluorenes are of great interest due to their ability to form thin films with tunable optical and electrical properties. In this paper, copolymers of polyfluorene with electron withdrawing dicyanostilbene and dicyanophenanthrene moieties were synthesized; their thin films were characterized by electron spectroscopy, cyclic voltammetry, electrical, and photoelectrical measurements. The mobility of charge carriers in the copolymers was measured for the first time, with the acceptor components providing balanced electron and hole mobilities of the order of 10−6 cm2·V−1·s−1. Photodetectors based on the copolymer/PTCDI heterojunction exhibited the photoresponse band extended into the green region due to the absorption of PTCDI and an increased photocurrent in the UV-blue absorption band of the copolymer, which is related to the absorption of photoluminescent emission of the copolymers in PTCDI. The presented approach to improving the performance of a polymer-based photodetector is promising in organic optoelectronics.
AB - Copolyfluorenes are of great interest due to their ability to form thin films with tunable optical and electrical properties. In this paper, copolymers of polyfluorene with electron withdrawing dicyanostilbene and dicyanophenanthrene moieties were synthesized; their thin films were characterized by electron spectroscopy, cyclic voltammetry, electrical, and photoelectrical measurements. The mobility of charge carriers in the copolymers was measured for the first time, with the acceptor components providing balanced electron and hole mobilities of the order of 10−6 cm2·V−1·s−1. Photodetectors based on the copolymer/PTCDI heterojunction exhibited the photoresponse band extended into the green region due to the absorption of PTCDI and an increased photocurrent in the UV-blue absorption band of the copolymer, which is related to the absorption of photoluminescent emission of the copolymers in PTCDI. The presented approach to improving the performance of a polymer-based photodetector is promising in organic optoelectronics.
KW - Charge carrier mobility
KW - Fluorescence
KW - Perylenedicarboximide derivative
KW - Photoconductivity
KW - Polyfluorene copolymer
UR - https://www.scopus.com/pages/publications/85208023831
U2 - 10.1007/s10118-024-3231-4
DO - 10.1007/s10118-024-3231-4
M3 - Article
AN - SCOPUS:85208023831
SN - 0256-7679
VL - 42
SP - 1941
EP - 1947
JO - Chinese Journal of Polymer Science (English Edition)
JF - Chinese Journal of Polymer Science (English Edition)
IS - 12
ER -