|Author||Haque Choudhury, Mohammad Shamimul ♦ Kishi, Naoki ♦ Soga, Tetsuo|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||MATERIALS SCIENCE ♦ CHARGE TRANSPORT ♦ COMPARATIVE EVALUATIONS ♦ COMPRESSION ♦ ELECTRIC CONDUCTIVITY ♦ ELECTROCHEMISTRY ♦ IMPEDANCE ♦ LAYERS ♦ LIFETIME ♦ PHOTOANODES ♦ PHOTOVOLTAIC EFFECT ♦ SCANNING ELECTRON MICROSCOPY ♦ SOLAR CELLS ♦ SPECTROSCOPY ♦ TEMPERATURE RANGE 0273-0400 K ♦ X-RAY DIFFRACTION ♦ ZINC OXIDES|
|Abstract||Highlights: • A new postdeposition treatment named hot-compress is introduced. • Hot-compression gives homogeneous compact layer ZnO photoanode. • I-V and EIS analysis data confirms the efficacy of this method. • Charge transport resistance was reduced by the application of hot-compression. - Abstract: This article introduces a new postdeposition treatment named hot-compress for flexible zinc oxide–base dye-sensitized solar cells. This postdeposition treatment includes the application of compression pressure at an elevated temperature. The optimum compression pressure of 130 Ma at an optimum compression temperature of 70 °C heating gives better photovoltaic performance compared to the conventional cells. The aptness of this method was confirmed by investigating scanning electron microscopy image, X-ray diffraction, current-voltage and electrochemical impedance spectroscopy analysis of the prepared cells. Proper heating during compression lowers the charge transport resistance, longer the electron lifetime of the device. As a result, the overall power conversion efficiency of the device was improved about 45% compared to the conventional room temperature compressed cell.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Materials Research Bulletin|
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