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Enhancement of electrical and optical performance of N719 by co- sensitization

机译：通过共敏化增强N719的电和光学性能

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This paper deals with the electrical, optical and electrochemical properties of a metal-free dye C78H74O8 (AS-2), which has been used to improve the photo-detection properties of C58H86N8O8RuS2 (N719) based Dye sensitized photo-sensors (DSPSs). Both dyes were mixed together in various proportions and the most promising ratio N719/AS-2 (1:0.25) was selected for staining photo-anodes for DSPS integration. The fabricated DSPSs were studied in terms of electrical parameters and photodetection properties. The N719/AS-2 (1:0.25) based DSPS were found to have a reduced leakage current, increased breakdown voltage and a closer proximity to an ideal diode, as compared to the N719 based DSPS. Further, the N719/AS-2 (1:0.25) based DSPS was also found to have better linearity at high irradiance levels, thus rendering the co-sensitized device useful as a photosensor in various applications. Electrochemical Impedance Spectroscopy (EIS) analysis was also performed to explain the interfacial charge recombination process. (C) 2018 Elsevier B.V. All rights reserved.
机译：本文研究了无金属染料C78H74O8（AS-2）的电，光学和电化学性质，该染料已用于改善基于C58H86N8O8RuS2（N719）的染料敏化光电传感器（DSPSs）的光电检测性能。将两种染料以各种比例混合在一起，选择最有希望的比率N719 / AS-2（1：0.25）进行DSPS集成的阳极染色。对制成的DSPS进行了电参数和光电检测特性方面的研究。与基于N719的DSPS相比，发现基于N719 / AS-2（1：0.25）的DSPS具有更低的泄漏电流，更高的击穿电压和更接近理想二极管的位置。此外，还发现基于N719 / AS-2（1：0.25）的DSPS在高辐照度水平下具有更好的线性度，因此使共增感器件在各种应用中可用作光电传感器。还进行了电化学阻抗谱（EIS）分析，以解释界面电荷重组过程。 （C）2018 Elsevier B.V.保留所有权利。

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