An all carbon dye sensitized solar cell: A sustainable and low-cost design for metal free wearable solar cell devices

Alvira Ayoub Arbab, Mumtaz Ali, Anam Ali Memon, Kyung Chul Sun, Bum Jin Choi, Sung Hoon Jeong

Research output: Contribution to journalArticle

Abstract

Lightweight carbon electrodes are the new candidates for photovoltaic devices due to their temperature resistivity, ease of fabrication, and skin comfortability. Herein, a sustainable and facile strategy has been proposed for metal free all carbon dye sensitized solar cell (C-DSSC), assembled by stacking carbon front electrode (CFE) and carbon counter electrode (CCE). The CFE demonstrated adequate light transmittance (70–50%) while maintaining efficient photon absorption and charge separation mechanism due to dye coated TiO2 nanorods (P25-R). The graphene dip coated carbon counter electrode (Gr@CCE) possesses remarkable electro catalytic activity towards I3 -/I- redox couple with low charge transfer resistance (RCT = 0.79 Ω). The sustainable design of C-DSSC attained ~6 ± 0.5% efficiency with high photocurrent density of 18.835 mA. cm−2. The superior performance of C-DSSC is accredited to its improved charge mobility, low internal resistance, and better interfacial electrode contact. The thickness of C-DSSC is ≤3 mm eliminates the need for rigid glass in DSSC.

Original languageEnglish
Pages (from-to)386-401
Number of pages16
JournalJournal of Colloid and Interface Science
Volume569
DOIs
StatePublished - 2020 Jun 1

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Keywords

  • Carbon
  • Dye sensitized solar cell
  • Electrocatalytic activity
  • Graphene
  • TiO nanorods

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