Document Detail

Optical Engineering of Uniformly Decorated Graphene Oxide Nano-Flakes via in situ Growth of Silver Nanoparticles with Enhanced-Plasmonic Resonance.
MedLine Citation:
PMID:  25389764     Owner:  NLM     Status:  Publisher    
A silver nanoparticles decorated graphene oxide (GO-Ag NPs) nanocomposite with surface plasmon resonance (SPR) effect was inherited to improve the performance of polymer solar cells (PSCs). The GO-Ag NPs was fabricated in situ via ultraviolet (UV) irradiation (254 nm) of GO and AgNO3 mixture aqueous solution. The photoexcited GO accelerated reduction of Ag+ ions into silver nanoparticles (Ag NPs) upon UV irradiation and the Ag NPs spontaneously deposited on the GO nano-flakes simultaneously for the numerous functional groups on GO enable efficient adsorption of Ag+ ions and Ag NPs via electrostatic interactions. The strong coupling between the SPR effect of GO-Ag NPs and incident light offers the probability of improved light absorption and corresponding exciton generation rate with enhanced the charge collection, resulting in significant enhancement in short-circuit current density and power conversion efficiency (PCE). Therefore, the PCE of PSCs based on poly[4,8-bis-(2-ethyl-hexyl-thiophene-5-yl)-benzo[1,2-b:4,5-b]dithiophene-2,6-diyl]-alt-[2-(2-ethyl-hexanoyl)-thieno[3,4-b]thiophen-4,6-diyl] (PBDTTT-C-T) and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) has been substantially elevated to 7.54 % from 6.58 % by introducing GO-Ag NPs at the ITO/PEDOT:PSS interface. In addition, the excellent properties of GO-Ag NPs including simple preparation, processability in aqueous solution, cost-effective and sustainable, enable it suitable for the roll-to-roll manufacturing PSCs.
Kai Yuan; Lie Chen; Yiwang Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-12
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-12     Completed Date:  -     Revised Date:  2014-11-13    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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