Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 121, Issue -, Pages 28-34Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2013.10.032
Keywords
Inverted polymer solar cells; Light trapping; Al-doped ZnO; Textured
Funding
- National Basic Research Program of China [2011CBA00705, 2011CBA00706, 2011CBA00707]
- National Natural Science Foundation of China [61377031]
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The effects of sol-gel textured Al-doped ZnO (AZO) cathode buffer layer on the performance of the inverted polymer solar cells have been investigated in this work. Textured AZO, together with a reflective back electrode provides efficient light-trapping, inducing further light absorption in the active layer. The AZO films were characterized with respect to their morphology, optical and electrical properties. Due to the enhanced absorption at near-UV/blue light region (300-500 nm), the short current density of the textured-AZO device is increased from 9.52 to 11.30 mA/cm(2) compared with the reference cell based on the flat-AZO. Power conversion efficiency is increased substantially from 2.44% to 2.87% since without loss in the fill factor and open circuit voltage. (C) 2013 Elsevier B.V. All rights reserved.
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