Low-Temperature, Solution-Processed Hole Selective Layers for Polymer Solar Cells
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- 作者：Chuang Yao ; Xinjun Xu ; Jinshan Wang ; Leilei Shi ; Lidong Li
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：February 13, 2013
- 年：2013
- 卷：5
- 期：3
- 页码：1100-1107
- 全文大小：422K
- 年卷期：v.5,no.3(February 13, 2013)
- ISSN：1944-8252
文摘
A new method is reported for preparing solution-processed molybdenum oxide (MoO3) hole selective layer (HSL). Via combustion processing at low annealing temperatures, the obtained MoO3 HSL exhibits a high charge-transporting performance similar to poly(ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) but overcoming its defect to device stability. The combustion precursor solution using ammonium heptamolybdate as the metal source, acetylacetone as a 鈥榝uel鈥? and nitric acid as an oxidizer can largely reduce the temperature for transformation of the polyoxomolybdate to 伪-phase MoO3. Furthermore, when a small amount of PEDOT:PSS has been introduced into the combustion precursor solution to improve the film morphology, the derived film can exhibit a flat and continuous surface morphology with coexistence of 伪- and 尾-MoO3 after being annealed at a low temperature (150 掳C). The simplicity, rapidness, and effectiveness of our method together with the low annealing temperature needed make it promising for the roll-to-roll manufacture of polymer solar cells.