6533b873fe1ef96bd12d564d
RESEARCH PRODUCT
Improvement of DSSC performance by voltage stress application
Giuseppe CalogeroGaetano Di MarcoClara ChiapparaAndrea ScutoIlaria CitroSalvatore LombardoFabio Principatosubject
Materials scienceageing effectContext (language use)02 engineering and technology010402 general chemistryDye-sensitized solar cells01 natural sciencesageing effectslaw.inventionlawSolar cellelectric stressEquivalent series resistanceOpen-circuit voltagebusiness.industryPhotovoltaic systemEnergy conversion efficiency021001 nanoscience & nanotechnologyelectric streperformance improvement0104 chemical sciencesDye-sensitized solar cellOptoelectronics0210 nano-technologybusinessDye-sensitized solar cellShort circuitdescription
Dye-sensitized solar cells (DSSCs) are promising third generation photovoltaic devices given their potential low cost and high efficiency. Some factors still affect DSSCs performance, such structure of electrodes, electrolyte compositions, nature of the sensitizers, power conversion efficiency, long-term stability, etc. In this work we discuss the effect of electrical stresses, which allow to improve DSSC performance. We have investigated the outcomes of forward and reverse DC bias stress as a function of time, voltage, and illumination level in the DSSCs sensitized with the N719, Ruthenium complex based dye. We demonstrate that all the major solar cell parameters, i.e., open circuit voltage (VOC), short circuit current (ISC), series resistance (ROC), fill factor (FF), and power conversion efficiency are strongly influenced by the stress conditions and a clear reversibility of the parameters on the stress type is shown. In this context we examined the possible effects that emerge from the electrolyte composition.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-04-01 |