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In-situ microfluidic controlled, low temperature hydrothermal growth of
nanoflakes for dye-sensitized solar cells
#MMPMID26631685
Zhao C
; Zhang J
; Hu Y
; Robertson N
; Hu PA
; Child D
; Gibson D
; Fu YQ
Sci Rep
2015[Dec]; 5
(?): 17750
PMID26631685
show ga
In this paper, an in-situ microfluidic control unit (MCU) was designed and
applied in a hydrothermal synthesis process, which provides an easy way to
localize liquid-phase reaction and realize selective synthesis and direct growth
of nanostructures as well as their morphology, all in a low-temperature and
atmospheric environment. The morphology was controlled through controlling the
amount of additivities using the MCU. This achieved a facile fabrication of Al
doped ZnO (AZO) nanoflakes vertically grown on flexible polymer substrates with
enhanced light scattering and dye loading capabilities. Flexible DSSCs with a
significant enhancement (410% compare to ZnO NRs based devices) in power
conversion efficiency were obtained using AZO nanoflake photoanodes of 6 ?m
thick, due to the enhancement in electron mobility and reduction in
recombination. This hydrothermal synthesis using the in-situ MCU provides an
efficient and scalable technique to synthesize controllable nanostructures with
characteristics of easy set-up, low energy consumption and low cost.
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