Efficiency Enhancement of PbS Quantum Dot/ZnO Nanowire Bulk-Heterojunction Solar Cells by Plasmonic Silver Nanocubes

ACS Nano
Tokuhisa KawawakiTetsu Tatsuma

Abstract

For improvement of solar cell performance, it is important to make efficient use of near-infrared light, which accounts for ∼40% of sunlight energy. Here we introduce plasmonic Ag nanocubes (NCs) to colloidal PbS quantum dot/ZnO nanowire (PbS QD/ZnO NW) bulk-heterojunction solar cells, which are characterized by high photocurrents, for further improvement in the photocurrent and power conversion efficiency (PCE) in the visible and near-infrared regions. The Ag NCs exhibit strong far field scattering and intense optical near field in the wavelength region where light absorption of PbS QDs is relatively weak. Photocurrents of the solar cells are enhanced by the Ag NCs particularly in the range 700-1200 nm because of plasmonic enhancement of light absorption and possible facilitation of exciton dissociation. As a result of the optimization of the position and amount of Ag NCs, the PCE of PbS QD/ZnO NW bulk-heterojunction solar cells is improved from 4.45% to 6.03% by 1.36 times.

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Citations

Feb 24, 2016·ACS Applied Materials & Interfaces·Mengnan YaoLiang Shen
Nov 19, 2015·Advanced Materials·Xinzheng LanEdward H Sargent
Nov 26, 2015·Nanoscale·Koichiro Saito, Tetsu Tatsuma
Oct 19, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Dapeng WuKai Jiang
Jul 25, 2017·Chemical Reviews·Kosei UenoHiroaki Misawa
May 1, 2018·Science and Technology of Advanced Materials·Samy AlmosniJean-François Guillemoles
Jun 22, 2019·Advanced Materials·Se-Woong BaekEdward H Sargent
May 6, 2019·Nanotechnology·Vincent ConsonniThomas Cossuet
Mar 1, 2016·Beilstein Journal of Nanotechnology·Martina BanchelliGabriella Caminati
Oct 11, 2019·Advanced Materials·James Z FanEdward H Sargent
Jun 5, 2021·Advanced Materials·Junwei LiuZhihua Zhou
Jun 22, 2021·IScience·Kunping GuoFranco Cacialli
Dec 11, 2019·ACS Applied Materials & Interfaces·Hadi Tavakoli DastjerdiMohammad Mahdi Tavakoli
Jan 10, 2018·The Journal of Physical Chemistry Letters·Charles CherquiDavid J Masiello
Dec 29, 2016·Chemical Reviews·Yoon Hee JangDong Ha Kim
May 6, 2019·Journal of the American Chemical Society·Tokuhisa KawawakiToshiharu Teranishi

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