Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 117, Issue -, Pages 610-616Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2013.07.015
Keywords
Polymer solar cell; Boron-doped zinc oxide; MOCVD; Stability; Inverted
Funding
- National Basic Research Program of China [2011CBA00705]
- National Science Foundation of China [11174163]
- Natural Science Foundation of Zhejiang Province [LQ13F050007]
- K.C. Wong Magna Fund in Ningbo University
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We report on the photovoltaic properties of inverted polymer solar cells (IPSCs) where the transparent indium tin oxide (ITO) electrode was modified by a ZnO layer using metal organic chemical vapor deposition (MOCVD). The intrinsic ZnO (i-ZnO) layers were deposited with varying thicknesses from 0 to 1500 nm. The work function and surface morphology of ITO/i-ZnO were found to be dependent on the i-ZnO thickness. When the thickness of the i-ZnO layer was 80 nm, optimized IPSCs with a power conversion efficiency (PCE) of 2.93% was achieved. Furthermore, the i-ZnO layer doped with boron (BZO) was investigated. The best IPSC with a BZO layer showed a PCE of 3.26%, which is higher than that (2.93%) of the device with the i-ZnO layer. The better performance is due to combined effects of improvement in charge collection and conductivity of BZO/ITO electrode. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
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