Si hybrid solar cells with 13% efficiency via concurrent improvement in optical and electrical properties by employing graphene quantum dots

Meng Lin Tsai, Wan Rou Wei, Libin Tang, Hung Chih Chang, Shih Hsiang Tai, Po Kang Yang, Shu Ping Lau, Lih Juann Chen, Jr Hau He

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

By employing graphene quantum dots (GQDs) in PEDOT:PSS, we have achieved an efficiency of 13.22% in Si/PEDOT:PSS hybrid solar cells. The efficiency enhancement is based on concurrent improvement in optical and electrical properties by the photon downconversion process and the improved conductivity of PEDOT:PSS via appropriate incorporation of GQDs. After introducing GQDs into PEDOT:PSS, the short circuit current and the fill factor of rear-contact optimized hybrid cells are increased from 32.11 to 36.26 mA/cm2 and 62.85% to 63.87%, respectively. The organic-inorganic hybrid solar cell obtained herein holds the promise for developing photon-managing, low-cost, and highly efficient photovoltaic devices.

Original languageEnglish
Pages (from-to)815-821
Number of pages7
JournalACS Nano
Volume10
Issue number1
DOIs
Publication statusPublished - Jan 26 2016
Externally publishedYes

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Graphene
Semiconductor quantum dots
Solar cells
graphene
Electric properties
Optical properties
solar cells
electrical properties
quantum dots
optical properties
Photons
photons
short circuit currents
Short circuit currents
conductivity
augmentation
cells
poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
Costs

Keywords

  • Downconversion
  • Graphene
  • Hybrid solar cell
  • PEDOT:PSS
  • Quantum dot

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Si hybrid solar cells with 13% efficiency via concurrent improvement in optical and electrical properties by employing graphene quantum dots. / Tsai, Meng Lin; Wei, Wan Rou; Tang, Libin; Chang, Hung Chih; Tai, Shih Hsiang; Yang, Po Kang; Lau, Shu Ping; Chen, Lih Juann; He, Jr Hau.

In: ACS Nano, Vol. 10, No. 1, 26.01.2016, p. 815-821.

Research output: Contribution to journalArticle

Tsai, Meng Lin ; Wei, Wan Rou ; Tang, Libin ; Chang, Hung Chih ; Tai, Shih Hsiang ; Yang, Po Kang ; Lau, Shu Ping ; Chen, Lih Juann ; He, Jr Hau. / Si hybrid solar cells with 13% efficiency via concurrent improvement in optical and electrical properties by employing graphene quantum dots. In: ACS Nano. 2016 ; Vol. 10, No. 1. pp. 815-821.
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AU - Tai, Shih Hsiang

AU - Yang, Po Kang

AU - Lau, Shu Ping

AU - Chen, Lih Juann

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