Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62121
Title: Solution-processable ultrathin black phosphorus as an effective electron transport layer in organic photovoltaics
Authors: Lin, S
Liu, S
Yang, Z
Li, Y
Ng, TW
Xu, Z
Bao, Q
Hao, J 
Lee, CS
Surya, C 
Yan, F 
Lau, SP 
Keywords: Black phosphorus
Electron transport layer
Organic photovoltaics
Solution-processable
Issue Date: 2016
Publisher: Wiley-VCH
Source: Advanced functional materials, 2016, v. 26, no. 6, p. 864-871 How to cite?
Journal: Advanced functional materials 
Abstract: 2D van der Waals crystals, possessing excellent electronic and physical properties, have been intriguing building blocks for organic optoelectronic devices. Most of the 2D materials are served as hole transport layers in organic devices. Here,it is reported that solution exfoliated few layers black phosphorus (BP) can be served as an effective electron transport layer (ETL) in organic photovoltaics (OPVs) for the first time. The power conversion efficiencies (PCEs) of the BP-incorporated OPVs can be improved to 8.18% in average with the relative enhancement of 11%. The incorporation of BP flakes with the optimum thickness of ≈10 nm can form cascaded band structure in OPVs, which can facilitate electron transport and enhance the PCEs of the devices. This study opens an avenue in using solution exfoliated BP as a highly efficient ETL for organic optoelectronics.
URI: http://hdl.handle.net/10397/62121
ISSN: 1616-301X
DOI: 10.1002/adfm.201503273
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