# Optimal performance of silicon nanowire solar cells under low sunlight concentration and their integration as bottom cells in III–V multijunction systems

https://mdr.nims.go.jp/datasets/53619aeb-66c1-47b2-af27-b87fcc95be1c

## File

- [Frontiers_nano.pdf](https://mdr.nims.go.jp/filesets/afef0bfe-66ce-4da2-b80d-6e00035da70c/download) ([Detail](https://mdr.nims.go.jp/filesets/afef0bfe-66ce-4da2-b80d-6e00035da70c.md))

## Id

53619aeb-66c1-47b2-af27-b87fcc95be1c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-11T01:18:21.096280Z

## Updated at

2024-12-11T07:30:47.514971Z

## Published at

2024-12-11T07:30:47.591188Z

## Doi



## First published url

https://doi.org/10.3389/fnano.2024.1456915

## Date published

2024-10-02

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Optimal performance of silicon nanowire solar cells under low sunlight concentration
    and their integration as bottom cells in III–V multijunction systems
  title_type: original
  lang: en

## Description

- description: Nanostructured silicon solar cells are designed to minimize costs through
    reduced material usage while enhancing power conversion efficiency via superior
    light trapping and shorter charge separation distances compared to traditional
    planar cells. This study identifies the optimal conditions for nanoimprinted silicon
    nanowire (SiNW) solar cells to achieve maximum efficiency under low sunlight concentration
    and evaluates their performance as bottom cells in III–V multijunction solar cell
    systems. The findings indicate that the SiNW solar cell reaches its peak performance
    at a concentration factor of 7.5 suns and a temperature of 40°C or lower. Specifically,
    the absolute conversion efficiency under these conditions is 1.05% higher than
    that under unconcentrated light. Compared to a planar silicon solar cell under
    identical conditions, the SiNW solar cell exhibits a 3.75% increase in conversion
    efficiency. Additionally, the SiNW single-junction solar cell, when integrated
    in series with a commercial lattice-matched InGaP/GaAs dual-junction solar cell,
    was tested under unconcentrated sunlight, specifically at one-sun, global air
    mass 1.5 condition, to assess its viability in one-sun multi-junction solar cell
    applications. The results suggest that a III–V upper subcell with a smaller active
    area than that of the SiNW subcell is optimal for maximizing current production,
    which is favorable to the cost reduction of the device. This hybrid configuration
    is particularly advantageous for terrestrial applications, such as electric vehicles,
    which demand lightweight, high-performance multijunction solar cell devices. Although
    the weight reduction of the characterized SiNW solar cell with a full silicon
    substrate compared to its planar solar cell counterpart is 1.8%, recommendations
    to increase this reduction to as much as 64.5% are discussed to conclude this
    paper.
  description_type: abstract
  lang: und

## Creator

- name: Bernice Mae Yu Jeco-Espaldon
  role: author
- name: Wipakorn Jevasuwan
  role: author
  orcid: https://orcid.org/0000-0001-9117-2497
  organization: National Institute for Materials Science
- name: Yoshitaka Okada
  role: author
- name: Naoki Fukata
  role: author
  orcid: https://orcid.org/0000-0002-0986-8485
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Frontiers Media SA

## Managing organization



## Keyword

- subject: laser beam-induced current, multijunction solar cell, nanofabrication,
    solar cell characterization, silicon nanowire, III–V/silicon solar cells
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Frontiers in Nanotechnology
  issn: '26733013'
  volume: '6'
  article_number: '1456915'

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## Related item



## Funding

- identifier: 20K21135
  funder_name: Japan Society for the Promotion of Science
- identifier: 2000942-0
  funder_name: New Energy and Industrial Technology Development Organization
- funder_name: Department of Science and Technology, Philippines

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## Fileset

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  filename: Frontiers_nano.pdf
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## Thumbnail

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filename: Frontiers_nano.pdf