Journal
MATERIALS
Volume 6, Issue 12, Pages 5796-5820Publisher
MDPI
DOI: 10.3390/ma6125796
Keywords
sol-gel methods; metal oxide interfaces; inverted structure; device stability
Categories
Funding
- German Research Foundation (DFG)
- Solar goes Hybrid project
- Energy Campus Nuremberg (EnCN)
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Solution-processed inverted bulk heterojunction (BHJ) solar cells have gained much more attention during the last decade, because of their significantly better environmental stability compared to the normal architecture BHJ solar cells. Transparent metal oxides (MeOx) play an important role as the dominant class for solution-processed interface materials in this development, due to their excellent optical transparency, their relatively high electrical conductivity and their tunable work function. This article reviews the advantages and disadvantages of the most common synthesis methods used for the wet chemical preparation of the most relevant n-type- and p-type-like MeOx interface materials consisting of binary compounds A(x)B(y). Their performance for applications as electron transport/extraction layers (ETL/EEL) and as hole transport/extraction layers (HTL/HEL) in inverted BHJ solar cells will be reviewed and discussed.
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