Development of metallization process. FSA project, cell and module formation research area

New pastes were evaluated that contained additives to aid in the silicon-to-metallization contact. None were completely successful. A reevaluation of the molybdenum oxide paste and the two-step screen printing process was done. The oxide paste did not show promise. The two-step process enabled soldering of the cells but the cells still had a high series resistance. Pastes are on order from a different manufacturer

Development of metallization process, FSA project, cell and module formation research area

Solar cells without AR coating achieved efficiencies of 10.5% with the Type A Mo/Sn/TiH paste. Curve shape, series resistance, and shunt resistance are all excellent and comparable to silver paste controls. Other pastes were not successful

Development of metallization process

A non lead frit paste is evaluated. A two step process is discussed where the bulk of the metallization is Mo/Sn but a small ohmic pad is silver. A new matrix of paste formulations is developed. A variety of tests are performed on paste samples to determine electrical, thermal and structural properties

Design, analysis and test verification of advanced encapsulation systems

A preliminary reduced variable master was constructed for pressure loading. A study of cell thickness versus cell stress was completed. Work is continuing on encapsulation of qualification modules. A 4 ft x 4 ft 'credit card' construction laminate was made

How The Devil Influenced Rock and Metal

If folktales are to be believed, the Devil seems to have quite the interest in music. From the satanic imagery in metal, the legendary fiddle duel in “The Devil Went Down to Georgia,” to the legend of Robert Johnson selling his soul to the Devil at a crossroads. It would appear that the Prince of Darkness likes a good tune as much as you and I. He has been present every step of the way in popular music throughout the last century. The relationship between the Devil and music goes back centuries, but this paper begins in the Delta with Tommy Johnson and Robert Johnson (no relation) and how they both made deals with the Devil, continues with an analysis of how the Devil influenced rock and metal as we know today, and concludes with an examination of how Satan remains as the most powerful symbol of absolute rebellion in music today

Electric motor selection

"4/83/5M""Electric motors are used for a multitude of tasks. The use of this equipment has relieved us from tedious and time-consuming chores. For example, a 1 horsepower (HP) motor that is about 75 percent efficient will consume approximately 1,000 watts. Thus, a general rule for electric motors is 1 horsepower-hour equals 1 kilowatt-hour. One horsepower-hour is equivalent to one person working 10 hours. A 1 HP motor can do in one hour for about 6[cents] what it would take a person about 10 hours to do. Electric motors will continue to be used for new jobs around the farm as long as the price and scarcity of labor continue to increase. Once you determine that a motor is required for a particular task, you must decide on one of a variety of types, classes, efficiencies, and makes. This booklet provides an explanation of the various terms used and compared different electric motors."--Page 1.Missouri Farm Electrification Council, Inc., Cooperative Extension Service University of Missouri--Columbia

Development of metallization process

Solar cells were produced using a Mo/Sn/TiH screen printed paste with a lead/borosilicate frit that are electrically comparable to control silver cells. The process is currently unsuccessful because the soldering of interconnects to these cells has proved difficult. Future work will investigate using CO instead of H2 as the reducing gas and putting an ITO coating on the cell prior to metallization