Browsing by Author "Tseng, Hsin-Chen"

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Organic active-layer solution for polymer solar cell and method for preparing the same
(2009-09-03)
Chen, Fang-Chung
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Tseng, Hsin-Chen
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Ko, Chu-Jung
An organic active-layer solution for a polymer solar cell and a method for preparing the same are provided, wherein the organic active-layer solution comprises an organic active-layer material, a first organic solvent and a second organic solvent. The first organic solvent has a boiling point ranging from 50° C. to 200° C. while the second organic solvent has a boiling point ranging from 150° C. to 300° C. The second organic solvent is added into the first organic solvent to dissolve the organic active-layer material. As the second organic solvent has a higher boiling point (a lower evaporation speed), it can directly lower an evaporation speed of the organic active-layer solution, thereby simplifying a manufacturing process of the polymer solar cell and increasing a power conversion efficiency of the polymer solar cell.
Solvent mixtures for improving device efficiency of polymer photovoltaic devices
(2008-03-10)
Chen, Fang-Chung
;
Tseng, Hsin-Chen
;
Ko, Chu-Jung
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光電工程學系
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顯示科技研究所
In this work, we used solvent mixtures, consisting of 1-chloronaphthalene (Cl-naph), one solvent with a high boiling point, and o-dichlorobenzene, to prepare the polymer films for polymer photovoltaic devices. Because of the lower vapor pressure of the solvent mixtures, the polymer films dried slower. With higher Cl-naph concentration in the organic solvent, the polymer chains had longer time to self-organize themselves. As a result, the higher degree of crystalline led to lower device series resistance, thereby increasing the performance of the photovoltaic devices. (c) 2008 American Institute of Physics.