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Solution‐Processed Metal Oxides as Efficient Carrier Transport Layers for Organic Photovoltaics
Author(s) -
Choy Wallace C. H.,
Zhang Di
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201502258
Subject(s) - organic solar cell , materials science , photovoltaics , nanotechnology , fabrication , oxide , photovoltaic system , oled , polymer , electrical engineering , medicine , alternative medicine , composite material , pathology , layer (electronics) , metallurgy , engineering
Carrier (electron and hole) transport layers (CTLs) are essential components for boosting the performance of various organic optoelectronic devices such as organic solar cells and organic light‐emitting diodes. Considering the drawbacks of conventional CTLs (easily oxidized/unstable, demanding/costly fabrication, etc.), transition metal oxides with good carrier transport/extraction and superior stability have drawn extensive research interest as CTLs for next‐generation devices. In recent years, many research efforts have been made toward the development of solution‐based metal oxide CTLs with the focus on low‐ or even room‐temperature processes, which can potentially be compatible with the deposition processes of organic materials and can significantly contribute to the low‐cost and scale‐up of organic devices. Here, the recent progress of different types of solution‐processed metal oxide CTLs are systematically reviewed in the context of organic photovoltaics, from synthesis approaches to device performance. Different approaches for further enhancing the performance of solution‐based metal oxide CTLs are also discussed, which may push the future development of this exciting field.