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lixuanhua3739

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[资源] plasmonic solar cell 最新的表面等离子体有机太阳能电池

It is been widely reported that plasmonic effects in metallic nanomaterials
can enhance light trapping in organix solar cells (OSCs). However, typical
nanoparticles (NP) of high quality (i.e., mono-dispersive) only possess a
single resonant absorption peak, which inevitably limits the power conversion
effi ciency (PCE) enhancement to a narrow spectral range. Broadband
plasmonic absorption is obviously highly desirable. In this paper, a combination
of Ag nanomaterials of different shapes, including nanoparticles and
nanoprisms, is proposed for this purpose. The nanomaterials are synthesized
using a simple wet chemical method. Theoretical and experimental studies
show that the origin of the observed PCE enhancement is the simultaneous
excitation of many plasmonic low- and high-order resonances modes, which
are material-, shape-, size-, and polarization-dependent. Particularly for the Ag
nanoprisms studied here, the high-order resonances result in higher contribution
than low-order resonances to the absorption enhancement of OSCs
through an improved overlap with the active material absorption spectrum.
With the incorporation of the mixed nanomaterials into the active layer, a
wide-band absorption improvement is demonstrated and the short-circuit
photocurrent density ( J sc ) improves by 17.91%. Finally, PCE is enhanced by
19.44% as compared to pre-optimized control OSCs. These results suggest
a new approach to achieve higher overall enhancement through improving
broadband absorption.
AFM.pdf(1.99MB)
http://kuai.xunlei.com/d/LnU4De4L3njtUAQAdfd?p=130497

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