In:
Angewandte Chemie, Wiley, Vol. 128, No. 22 ( 2016-05-23), p. 6506-6510
Abstract:
The full harvest of solar energy by semiconductors requires a material that simultaneously absorbs across the whole solar spectrum and collects photogenerated electrons and holes separately. The stepwise integration of three semiconducting sulfides, namely ZnS, CdS, and Cu 2− x S, into a single nanocrystal, led to a unique ternary multi‐node sheath ZnS–CdS–Cu 2− x S heteronanorod for full‐spectrum solar energy absorption. Localized surface plasmon resonance (LSPR) in the nonstoichiometric copper sulfide nanostructures enables effective NIR absorption. More significantly, the construction of pn heterojunctions between Cu 2− x S and CdS leads to staggered gaps, as confirmed by first‐principles simulations. This band alignment causes effective electron–hole separation in the ternary system and hence enables efficient solar energy conversion.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v128.22
DOI:
10.1002/ange.201601865
Language:
English
Publisher:
Wiley
Publication Date:
2016
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