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Facile Synthesis of poly(3,4-ethylenedioxythiophene) Film via Solid-State Polymerization as High-Performance Pt-free Counter Electrodes for Plastic Dye-Sensitized Solar Cells

Facile Synthesis of poly(3,4-ethylenedioxythiophene) Film via Solid-State Polymerization as High-Performance Pt-free Counter Electrodes for Plastic Dye-Sensitized Solar Cells

Xiong Yin, Fan Wu, Nianqing Fu, Jing Han, Dongliang Chen, Peng Xu, Meng He, Yuan Lin

ACS Appl Mater Interfaces. 2013 Sep 11;5(17):8423-9.

PMID: 23927540

Abstract:

A high-performance Pt-free counter electrode (CE) based on poly(3,4-ethylenedioxythiophene) (PEDOT) film for plastic dye-sensitized solar cells (DSCs) has been developed via a facile solid-state polymerization (SSP) approach. The polymerization was simply initiated by sintering the monomer, 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT), at the temperature of 80 °C, which can be applied on the plastic substrate. The cyclic voltammetry measurements revealed that the catalytic activity of the SSP-PEDOT CE for triiodide reduction is comparable with that of the Pt CE. Under optimized conditions, the power conversion efficiency of a DSC with a N719-sensitized TiO2 photoanode and the SSP-PEDOT CE is 7.04% measured under standard 1 sun illumination (100 mW cm(-2), AM 1.5), which is very close to that of the device fabricated under the same conditions with a conventional thermally deposited Pt CE (7.35%). Furthermore, taking advantage of the compatibility of the SSP-PEDOT with the plastic substrates, a full plastic N719-sensitized TiO2 solar cell was demonstrated, and an efficiency of 4.65% was achieved, which is comparable with the performance of a plastic DSC with a sputter-deposited Pt CE (5.38%). These results demonstrated that solid-state polymerization initiated at low temperature is a facile and low-cost method of fabricating the high-performance Pt-free CEs for plastic DSCs.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP174508317	2,5-Dibromo-3,4-ethylenedioxythiophene		174508-31-7	Price

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