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lixuanhua3739

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[×ÊÔ´] plasmonic solar cell ×îеıíÃæµÈÀë×ÓÌåÓлúÌ«ÑôÄÜµç³Ø

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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ÏȽø²ÄÁÏ Óлú¹â·ü²ÄÁÏÓëÆ÷¼þ organic solar cell ÓлúÌ«ÑôÄÜµç³Ø
''ÄÉÃ×Ïà¹Ø Plasmonics organic solar cells ÐÂÄÜÔ´

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wore2627

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