Organic Photovoltaic Fabrication and Test Apparatus - Revision history

Cmditradmin at 22:37, 25 May 2010

2010-05-25T22:37:10Z

← Older revision		Revision as of 15:37, 25 May 2010
Line 41:		Line 41:

	{{#ev:youtube\|3kozKRTuZmg}}		{{#ev:youtube\|3kozKRTuZmg}}

			<swf width="800" height="600">http://depts.washington.edu/cmditr/media/opvfab.swf</swf>

	=== Significance ===		=== Significance ===

Cmditradmin: /* Overview */

2010-05-25T22:33:31Z

Overview

@@ Line 7: / Line 7: @@
 === Overview ===
-It takes many trials to perfect the materials and techniques that make for highly efficient organic solar cells. This apparatus at University of Arizona combines a vacuum fabrication area with a inert gas glove box where prototype cells can be tested under controlled circumstance.
+It takes many trials to perfect the materials and techniques that make for highly efficient organic solar cells. This apparatus at University of Arizona combines a vacuum fabrication area with a inert gas glove box where prototype cells can be tested under controlled circumstance. Organic photovoltaic devices are typically built with either the technique of vacuum deposition or spin coating. Either system allows the progressive build up of very thin uniform layers of chemicals and metallics. In spin coating the test surface is coated with a chemical and then spun at high speeds in a centrifuge so that excess material thins out. Vacuum deposition allows building up of layers one atom at a time and permits very precise control over the surface characteristics.
 The most common test is to generate a voltage vs current curve by experimentally varying the level of light used to excite the cell and by continually changing the load on the cell using a variable voltage power supply (reverse polarity). First a the cell is kept in the dark and a whole series of voltages are applied while the current is measured.  Then this series of measurements is repeated while the cell is illuminated. Typical measurements open-circuit voltage (V<sub>oc</sub>), short-circuit current (I<sub>sc</sub>), fill factor (FF), maximum power output of the device (P<sub>max</sub>), voltage at maximum power (V<sub>max</sub>), current at maximum power (I<sub>max</sub>). A higher Fill Factor means that the cells is operating closer to its theoretical maximum efficiency.
 See wiki article on [[Physics_of_Solar_Cells]]

Smhunter at 16:11, 13 May 2010

2010-05-13T16:11:00Z

← Older revision		Revision as of 09:11, 13 May 2010
Line 13:		Line 13:
	See wiki article on [[Physics_of_Solar_Cells]]		See wiki article on [[Physics_of_Solar_Cells]]

	=== Operation ===		=== Device Tour and Operation ===

	{{#ev:youtube\|3kozKRTuZmg}}		{{#ev:youtube\|3kozKRTuZmg}}

Smhunter at 16:10, 13 May 2010

2010-05-13T16:10:23Z

← Older revision		Revision as of 09:10, 13 May 2010
Line 15:		Line 15:
	=== Operation ===		=== Operation ===

	~~<swf width="642" height="552">http~~:~~//depts.washington.edu/cmditr/media/opvfab.swf</swf>~~		{{#ev:youtube\|3kozKRTuZmg}}

	=== Significance ===		=== Significance ===

Cmditradmin: /* Significance */

2010-01-04T19:33:15Z

Significance

← Older revision		Revision as of 12:33, 4 January 2010
Line 22:		Line 22:
	Poster: Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells		Poster: Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells

	[[Image:ITO-OPV.png\|thumb\|600px\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices		[[Image:ITO-OPV.png\|thumb\|600px\|center\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices
	]]		]]
	[[category:Research equipment]]		[[category:Research equipment]]

Cmditradmin: /* Significance */

2010-01-04T19:33:03Z

Significance

← Older revision		Revision as of 12:33, 4 January 2010
Line 22:		Line 22:
	Poster: Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells		Poster: Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells

	[[Image:ITO-OPV.png\|thumb\|~~300px~~\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices		[[Image:ITO-OPV.png\|thumb\|600px\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices
	]]		]]
	[[category:Research equipment]]		[[category:Research equipment]]

Cmditradmin: /* Significance */

2010-01-04T19:32:54Z

Significance

← Older revision		Revision as of 12:32, 4 January 2010
Line 20:		Line 20:
	One example of research using performance chararcterization is being being carried out by the Armstrong group at U of A.		One example of research using performance chararcterization is being being carried out by the Armstrong group at U of A.
	In this example variations of preparation of the ITO surface can be precisely compared.		In this example variations of preparation of the ITO surface can be precisely compared.
	~~[[Image~~:Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells		Poster: Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells
	~~\|thumb\|300px\|]]~~
	[[Image:~~Example~~.~~jpg~~\|thumb\|300px\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices		[[Image:ITO-OPV.png\|thumb\|300px\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices
	]]		]]
	[[category:Research equipment]]		[[category:Research equipment]]

Cmditradmin: /* Significance */

2010-01-04T19:25:51Z

Significance

← Older revision		Revision as of 12:25, 4 January 2010
Line 18:		Line 18:

	=== Significance ===		=== Significance ===
			One example of research using performance chararcterization is being being carried out by the Armstrong group at U of A.
			In this example variations of preparation of the ITO surface can be precisely compared.
			[[Image:Characterizing and Modifying the ITO/Organic Interface: Organic Solar Cells
			\|thumb\|300px\|]]
			[[Image:Example.jpg\|thumb\|300px\|The performance of organic photovoltaics can be drastically affected by the treatment the ITO receives. These treatments can change the ITO’s work function, remove carbon and/or hydroxides and change the relative ratio of In/Sn on the surface. This variability affects device repeatability and the performance of large-area devices
			]]
	[[category:Research equipment]]		[[category:Research equipment]]

Cmditradmin at 19:20, 29 December 2009

2009-12-29T19:20:00Z

← Older revision		Revision as of 12:20, 29 December 2009
Line 18:		Line 18:

	=== Significance ===		=== Significance ===
			[[category:Research equipment]]

Cmditradmin: /* Operation */

2009-12-16T23:49:23Z

Operation

← Older revision		Revision as of 16:49, 16 December 2009
Line 15:		Line 15:
	=== Operation ===		=== Operation ===

	<swf width="~~600~~" height="~~500~~">http://depts.washington.edu/cmditr/media/opvfab.swf</swf>		<swf width="642" height="552">http://depts.washington.edu/cmditr/media/opvfab.swf</swf>

	=== Significance ===		=== Significance ===