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- Title
Greatly Reduced Processing Temperature for a Solution-Processed NiO<sub> x</sub> Buffer Layer in Polymer Solar Cells.
- Authors
Zhai, Zhichun; Huang, Xiaodong; Xu, Meifeng; Yuan, Jianyu; Peng, Jun; Ma, Wanli
- Abstract
By application of thermal annealing and UV ozone simultaneously, a solution-processed NiO x film can achieve a work function of approximately -5.1 eV at a temperature below 150 °C, which allows the processing of NiO x that is compatible with fabrication of polymer solar cells (PSCs) on plastic substrates. The low processing temperature, which is greatly reduced from 250-400 °C to 150 °C, is attributed to the high concentration of NiOOH species on the film surface. This concentration will result in a large surface dipole and lead to increased work function. The pretreated NiO x is demonstrated to be an efficient buffer layer in PSCs based on polymers with different highest occupied molecular orbital energy levels. Compared with conventional poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate)-buffered PSCs, the NiO x-buffered PSCs achieve similar or improved device performance as well as enhanced device stability.
- Subjects
PHOTOVOLTAIC cells; SOLAR energy; POLYMERS; ANNEALING of metals; HEAT treatment of metals
- Publication
Advanced Energy Materials, 2013, Vol 3, Issue 12, p1614
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201300272