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Recovering degraded quasi-solid-state dye-sensitized solar cells by applying electrical pulses.

ABSTRACT: We discovered a method of applying a forward pulsed bias to recover the degraded quasi-solid-state dye-sensitized solar cells (DSSCs). Up to 30.7% of the power conversion efficiency (?) of a degraded poly(vinylidene fluoride) (PVDF) based DSSC was recovered by a double-pulse. The recovered ? remained higher than that before the double-pulse treatment for at least 28 days. It is deduced that the blocking of ion-transport channels in the quasi-solid-state electrolyte causes degradation of the DSSCs. This study will shed light on the efficiency enhancement and long-term stability of quasi-solid-state DSSCs.

SUBMITTER: Zhang X 

PROVIDER: S-EPMC3650726 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature

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Recovering degraded quasi-solid-state dye-sensitized solar cells by applying electrical pulses.

Zhang Xi X   Huang Xuezhen X   Jiang Hongrui H  

Physical chemistry chemical physics : PCCP 20130402 18

We discovered a method of applying a forward pulsed bias to recover the degraded quasi-solid-state dye-sensitized solar cells (DSSCs). Up to 30.7% of the power conversion efficiency (η) of a degraded poly(vinylidene fluoride) (PVDF) based DSSC was recovered by a double-pulse. The recovered η remained higher than that before the double-pulse treatment for at least 28 days. It is deduced that the blocking of ion-transport channels in the quasi-solid-state electrolyte causes degradation of the DSSC  ...[more]

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