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137033 https://hdl.handle.net/2286/R.I.22910 http://rightsstatements.org/vocab/InC/1.0/ 2014-05 54 pages eng Carpenter, Joe Victor Alford, Terry Holman, Zachary Barrett, The Honors College Chemical Engineering Program Materials Science and Engineering Program Text Proposed and tested were three different methods to deposit important layers of Silicon heterojunction solar cells (SHJs). If there were a shortage of Silver, Aluminum could be substituted for the contacts. If there were a shortage of Indium, Yttrium Zinc Oxide could be substituted. To improve the solar cell, the p and n type layers can be grown with hydrogenated nanocrystallline Silicon (nc-Si:H). 40% and 50% nc-Si:H has shown a maximum absorbance reduction of 5 times compared to hydrogenated amorphous Silicon (a-Si). The substitutions offer alternatives which increase the total possible amount of solar cell production, advancing toward completion of the Terrawatt challenge. Nanocrystals Photovoltaic Cells Amorphous Materials Silicon Novel Applications to Si Heterojunction Solar Cells