期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 6, 页码 5358-5365出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b13671
关键词
efficient polymer solar cells; metallic nanoparticles; LSPR effect; light scattering effect; avoid excitons quenching
资金
- National One-Thousand Foreign Expert Program [WQ20123700111]
- Program for Introducing Talents of Discipline to Universities (111 plan)
- Natural Scientific Foundation of China [51273096, 51373081, 51473082, 51603109, 51503112]
- State Key Project of International Cooperation Research [2016YFE0110800]
- Shandong Provincial Natural Science Foundation [ZR2016EMB03]
A new way was meticulously designed to utilize the localized surface plasmon resonance (LSPR) effect and the light scattering effect of silver nanoplate (Ag-nPl) and core-shell Ag@SiO2 nanoparticles (Ag@SiO2-NPs) to enhance the photovoltaic performances of polymer solar cells (PSCs). To prevent direct contact between silver nanoparticles (Ag-NPs) and photoactive materials which will cause electrons quenching, bare Ag-nPl were spin-coated on indium tin oxide and silica capsulated Ag-NPs were incorporated to a PBDTTT-C-T:PC71BM active layer. As a result, the devices incorporated with Ag-nPl and Ag@SiO2-NPs showed great enhancements. With the dual effects of Ag-nPl and Ag@SiO2-NPs in devices, all wavelength sensitization in the visible range was realized; therefore, the power conversion efficiency (PCE) of PSCs showed a great enhancement of 14.0% to 8.46%, with an increased short-circuit current density of 17.23 mA.cm(-2). The improved photovoltaic performances of the devices were ascribed to the LSPR effect and the light scattering effect of metallic nanoparticles. Apart from optical effects, the charge collection efficiency of PSCs was improved after the incorporation of Ag-nPl.
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