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Boosting photocurrent of GaInP top-cell for current-matched III-V monolithic multiple junction solar cells via plasmonic decahedral-shaped Au nanoparticles

Bai, Y; Yan, L; Wang, F; Yang, Y; Liu, H; Yin, Z; Chen, N; ... Tan, Z; + view all (2018) Boosting photocurrent of GaInP top-cell for current-matched III-V monolithic multiple junction solar cells via plasmonic decahedral-shaped Au nanoparticles. Solar Energy , 166 pp. 181-186. 10.1016/j.solener.2018.03.024.

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Abstract

Unbalanced photocurrent output for each sub-cell in monolithic multiple junction solar cells (MMJ-SCs) reduces the achievable photovoltaic power efficiency (PCE). Here, we first introduce Au decahedra nanoparticles to realize the plasmon-enhanced photo-absorption of GaInP top-cell and achieve the current-matched MMJ-SCs. By simply spin-coating the Au decahedral nanoparticles on the illuminated surface of the devices, the PCEs of the monolithic double junction and triple junction solar cells increase significantly from 27.01% to 28.63% and from 29.88% to 31.90%, respectively. Both the theoretical local electromagnetic distributions and the experimental extinction properties confirm the plasmonic induced absorption enhancement in device performance, and further elucidate the essential reason for photocurrent enhancement derives from the more furious oscillation of free electrons in the vicinity of sharp vertexes for Au decahedra nanoparticles. Our results demonstrate that Au decahedra with sharp vertexes and edges are promising for meliorating the trade-off between light absorption and carrier collection in GaInP top-cell. In addition, this facile and simple strategy also highlights non-annealing treatment and prevents the impurity diffusion at high temperature for MMJ-SCs, and may facilitate other types of solar-harvesting devices.

Type: Article
Title: Boosting photocurrent of GaInP top-cell for current-matched III-V monolithic multiple junction solar cells via plasmonic decahedral-shaped Au nanoparticles
DOI: 10.1016/j.solener.2018.03.024
Publisher version: https://doi.org/10.1016/j.solener.2018.03.024
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Monolithic multiple junction solar cells, Current-matching, Au decahedra nanoparticles, GaInP top-cell
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/10059987
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