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Issue 27, 2015
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A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

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Abstract

Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.

Graphical abstract: A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

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Supplementary files

Article information


Submitted
27 Apr 2015
Accepted
04 Jun 2015
First published
09 Jun 2015

This article is Open Access

Nanoscale, 2015,7, 11566-11574
Article type
Paper
Author version available

A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

V. Svrcek, T. Yamanari, D. Mariotti, S. Mitra, T. Velusamy and K. Matsubara, Nanoscale, 2015, 7, 11566
DOI: 10.1039/C5NR02703A

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