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

Journal Article · Mon Aug 18 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4893994· OSTI ID:22310915

Liu, Chunyu; Chang, Kaiwen; Guo, Wenbin; Li, Hao; Shen, Liang ^[1]; Chen, Weiyou ^[2]; Yan, Dawei ^[3]

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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)

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.

• OSTI ID: 22310915
• Journal Information: Applied Physics Letters, Vol. 105, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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