期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 3, 页码 2295-2300出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12268
关键词
Organic small molecule; rubrene; underlayer; planar perovskite solar cells
资金
- Scientific Research Foundation, the 973 Program-The National Basic Research Program of China Special Funds for the Chief Young Scientist [2015CB358600]
- Excellent Young Scholar Fund from National Natural Science Foundation of China [21422103]
- Natural Science Foundation of China [61307037]
- Jiangsu Fund for Distinguished Young Scientist [BK20140010]
- Prospective Project of Industry-University-Research Institution of Jiangsu Province, China [BY2014059-13]
The underlayer plays an important role for organic inorganic hybrid perovskite formation and charge transport in perovskite solar cells (PSCs). Here, we employ a classical organic small molecule, 5,6,11,12-tetraphenyltetracene (rubrene), as the underlayer of perovskite films to achieve 15.83% of power conversion efficiency with remarkable moisture tolerance exposed to the atmosphere. Experiments demonstrate rubrene hydrophobic underlayer not only drives the crystalline grain growth of high quality perovskite, but also contributes to the moisture tolerance of PSCs. Moreover, the matching energy level of the desirable underlayer is conductive to extracting holes and blocking electrons at anode in PSCs. This introduction of organic small molecule into PSCs provides alternative materials for interface optimization, as well as platform for flexible and wearable solar cells.
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