Flexible crystalline silicon radial junction photovoltaics with vertically aligned tapered microwires

Inchan Hwang, Han Don Um, Byeong Su Kim, Munib Wober, Kwanyong Seo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Much attention has been paid to thin crystalline silicon (c-Si) photovoltaic devices due to their excellent flexibility characteristics, stable efficiency, and possibility of use as highly efficient next-generation flexible photovoltaic devices (FPVs). To fabricate thin c-Si FPVs, it is important to improve their light-absorption properties while maintaining the flexible characteristics. In this study, vertically aligned microwires (MWs) on a 50 μm-thick thin c-Si substrate are designed for novel FPVs. Increasing the length of the MWs enhances the optical properties of the thin c-Si without affecting its flexibility. To maximize the efficiency of the thin c-Si FPVs with MWs, tapered MWs and a localized back-contact structure are devised. This device shows a maximum efficiency of 18.9%. In addition, the proposed thin c-Si FPV with MWs shows high stability without any change in efficiency, even with 1000 bending cycles with a bending radius of 12 mm. Thus, we successfully demonstrate battery-free flexible electronic devices integrated with our thin c-Si FPVs with MWs.

Original languageEnglish
Pages (from-to)641-647
Number of pages7
JournalEnergy and Environmental Science
Volume11
Issue number3
DOIs
Publication statusPublished - 2018 Mar

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Silicon
silicon
Crystalline materials
Flexible electronics
optical property
Light absorption
Optical properties
substrate
Substrates

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

Cite this

Hwang, Inchan ; Um, Han Don ; Kim, Byeong Su ; Wober, Munib ; Seo, Kwanyong. / Flexible crystalline silicon radial junction photovoltaics with vertically aligned tapered microwires. In: Energy and Environmental Science. 2018 ; Vol. 11, No. 3. pp. 641-647.
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Flexible crystalline silicon radial junction photovoltaics with vertically aligned tapered microwires. / Hwang, Inchan; Um, Han Don; Kim, Byeong Su; Wober, Munib; Seo, Kwanyong.

In: Energy and Environmental Science, Vol. 11, No. 3, 03.2018, p. 641-647.

Research output: Contribution to journalArticle

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