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Free‐Standing Conducting Polymer Films for High‐Performance Energy Devices
Author(s) -
Li Zaifang,
Ma Guoqiang,
Ge Ru,
Qin Fei,
Dong Xinyun,
Meng Wei,
Liu Tiefeng,
Tong Jinhui,
Jiang Fangyuan,
Zhou Yifeng,
Li Ke,
Min Xue,
Huo Kaifu,
Zhou Yinhua
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201509033
Subject(s) - pedot:pss , materials science , supercapacitor , conductive polymer , polystyrene sulfonate , capacitance , polystyrene , electrode , power density , sheet resistance , polymer , optoelectronics , conductivity , electrical conductor , nanotechnology , composite material , power (physics) , layer (electronics) , chemistry , physics , quantum mechanics
Thick, uniform, easily processed, highly conductive polymer films are desirable as electrodes for solar cells as well as polymer capacitors. Here, a novel scalable strategy is developed to prepare highly conductive thick poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (HCT‐PEDOT:PSS) films with layered structure that display a conductivity of 1400 S cm −1 and a low sheet resistance of 0.59 ohm sq −1 . Organic solar cells with laminated HCT‐PEDOT:PSS exhibit a performance comparable to the reference devices with vacuum‐deposited Ag top electrodes. More importantly, the HCT‐PEDOT:PSS film delivers a specific capacitance of 120 F g −1 at a current density of 0.4 A g −1 . All‐solid‐state flexible symmetric supercapacitors with the HCT‐PEDOT:PSS films display a high volumetric energy density of 6.80 mWh cm −3 at a power density of 100 mW cm −3 and 3.15 mWh cm −3 at a very high power density of 16160 mW cm −3 that outperforms previous reported solid‐state supercapacitors based on PEDOT materials.