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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.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Optimization of film morphology for the performance of organic thin film solar cells./
Author:	Muckley, Eric S.
Description:	79 p.
Notes:	Source: Masters Abstracts International, Volume: 52-01.
Contained By:	Masters Abstracts International52-01(E).
Subject:	Physics, General. -
Online resource:	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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100 1 $a Muckley, Eric S. $3 2094057
245 1 0 $a Optimization of film morphology for the performance of organic thin film solar cells.
300 $a 79 p.
500 $a Source: Masters Abstracts International, Volume: 52-01.
500 $a Adviser: Thomas Gredig.
502 $a Thesis (M.S.)--California State University, Long Beach, 2013.
520 $a 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.
590 $a School code: 6080.
650 4 $a Physics, General. $3 1018488
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Engineering, Electronics and Electrical. $3 626636
690 $a 0605
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710 2 $a California State University, Long Beach. $b Physics. $3 2094058
773 0 $t Masters Abstracts International $g 52-01(E).
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792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1523341