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

41 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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Keywords

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

ASJC Scopus subject areas

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

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