In:
Applied Optics, Optica Publishing Group, Vol. 59, No. 28 ( 2020-10-01), p. 9042-
Abstract:
Sodium alginate (SA), as a natural marine biopolymer, possesses many
merits such as super-easy accessibility from the ocean, low cost, nontoxicity, and no synthesis for practical application. For the
chemical structure, SA has enough lone electron pairs of oxygen atoms in the backbone and short branched chains, which is expected to
passivate oxygen vacancy on the surface of the ZnO cathode buffer layer to improve the photovoltaic performance. Herein, it was applied
to modify the surface trap of the ZnO layer in fullerene and non-fullerene polymer solar cells (PSCs). The defects were
successfully reduced, and the trap-assisted recombination decreased. In a PTB7-Th : P C 71 B M system, power conversion efficiency
(PCE) was improved from 8.06% to 9.36%. In the PM6:IT-4F system, PCE was enhanced from 12.13% to 13.08%. The addition of SA did not destroy
the stability of the device. Overall, this work demonstrates the potential for preparing devices with long-time stability and
industrial manufacture of PSCs by using biological materials in the future.
Type of Medium:
Online Resource
ISSN:
1559-128X
,
2155-3165
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2020
detail.hit.zdb_id:
207387-0
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