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Title: Improving charge transport property and energy transfer with carbon quantum dots in inverted polymer solar cells

Carbon quantum dots (Cdots) are synthesized by a simple method and introduced into active layer of polymer solar cells (PSCs). The performance of doped devices was apparently improved, and the highest power conversion efficiency of 7.05% was obtained, corresponding to a 28.2% enhancement compared with that of the contrast device. The charge transport properties, resistance, impedance, and transient absorption spectrum are systematically investigated to explore how the Cdots affect on PSCs performance. This study reveals the importance of Cdots in enhancing the efficiency of PSCs and gives insight into the mechanism of charge transport improvement.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. State Key Laboratory on Integrated Optoelectronics, Jilin University, 2699 Qianjin Street, Changchun 130012 (China)
  2. College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012 (China)
  3. Research Center of Laser Fusion, CAEP, P.O. Box 919-983, Mianyang 621900 (China)
Publication Date:
OSTI Identifier:
22310915
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; CARBON; CHARGE TRANSPORT; CONVERSION; DOPED MATERIALS; EFFICIENCY; ENERGY TRANSFER; IMPEDANCE; ORGANIC SOLAR CELLS; POLYMERS; QUANTUM DOTS; TRANSIENTS