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Optimization of film morphology for ...

Muckley, Eric S.

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Optimization of film morphology for the performance of organic thin film solar cells.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Optimization of film morphology for the performance of organic thin film solar cells./
作者:	Muckley, Eric S.
面頁冊數:	79 p.
附註:	Source: Masters Abstracts International, Volume: 52-01.
Contained By:	Masters Abstracts International52-01(E).
標題:	Physics, General. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1523341
ISBN:	9781303209093

Optimization of film morphology for the performance of organic thin film solar cells.
Muckley, Eric S.

Optimization of film morphology for the performance of organic thin film solar cells. - 79 p.

Source: Masters Abstracts International, Volume: 52-01.

Thesis (M.S.)--California State University, Long Beach, 2013.

The power conversion efficiency of organic thin film solar cells must be improved before they can become commercially competitive alternatives to silicon-based photovoltaics. Exciton diffusion and charge carrier migration in organic films are strongly influenced by film morphology, which can be controlled by the substrate temperature during film growth. Zinc-phthalocyaninelbuckminsterfullerene bilayer film devices are fabricated with substrate temperatures between 25°C and 224°C and their solar cell performance is investigated here. The device open-circuit voltage, efficiency, and fill factor all exhibit peaks when films are grown at temperatures between 160°C and 180°C, which is likely a result of both the increase in shunt resistance and reduction in undesirable back diode effects which occur between l00°C and 180°C. The device performance can also be attributed to changes in the film crystallite size, roughness, and abundance of pinholes, as well as the occurrence of crystalline phase transitions which occur in both zinc-phthalocyanine and buckminsterfullerene between 150°C and 200°C. The unusually high open-circuit voltage (1.2 V), low short-circuit current density (0.03 mA/cm2), and low device efficiency (0.04%) reported here are reminiscent of single layer phthalocyanine-based Schottky solar cells, which suggests that pinholes in bilayer film devices can effectively lead to the formation of Schottky diodes.

ISBN: 9781303209093Subjects--Topical Terms:

1018488
Physics, General.

Optimization of film morphology for the performance of organic thin film solar cells.
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