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(a) The SEM image of a monolayer of 450-nm PS nanospheres. (b) The top view SEM image of SiO2 nano-honeycombs with shrunk nanospheres. (c) The top view, (d) the 45° tilted, and (e) the cross-sectional SEM images of SiO2 nano-honeycombs after removing the remaining nanospheres.
(Color online) (a) The specular reflectance and (b) the EQEs measured on the MQW solar cells with bare surface and SiO2 honeycombs.
(Color online) Time-averaged and normalized TE electric field distribution, |Ez|, simulated by FDTD analysis within the GaN solar cells containing different surface conditions: (a) bare and (b) SiO2 nano-honeycombs. (c) Normalized optical power, integrated over the MQW region, as a function of times for the solar cells. The inset in (b) is the enlarged image in nano-honeycomb areas.
(Color online) J-V characteristics measured on the MQW solar cell with bare surface and nano-honeycombs.
Photovoltaic characteristics of the MQW solar cells with bare surfaces and nano-honeycombs.
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