Improved lifetimes of organic solar cells with solution-processed molybdenum oxide anode-modifying layers

Ashish Garg, Shailendra Kumar Gupta, Jacek J. Jasieniak, Th. Birendra Singh, Scott E. Watkins

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13 Citations (Scopus)


We report on the use and stability of solution-processed molybdenum oxide (sMoOx) thin films as anode-modifying layers to replace conventionally used poly(3,4-ethyldioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) layers in poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester (P3HT/PC61BM) bulk heterojunction organic solar cells. Our results show that while as prepared devices using the two anode-modifying layers possess similar performances, the sMoOx devices exhibit a staggering 20-fold stability improvement in its performance half-life compared with PEDOT/PSS devices, 3400 h versus 150 h, respectively. A further comparison of the stability between encapsulated and unencapsulated devices demonstrates the necessity for protection from atmospheric moisture and oxygen but again highlights the lucrative nature of sMoOx as a protective anode-modifying layer compared with PEDOT/PSS even under ambient conditions.
Original languageEnglish
Pages (from-to)989-996
Number of pages8
JournalProgress in Photovoltaics: Research and Applications
Issue number8
Publication statusPublished - Aug 2015
Externally publishedYes

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