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Arrays of ultrathin silicon solar microcells

United States Patent

August 11, 2015
View the Complete Patent at the US Patent & Trademark Office
Provided are solar cells, photovoltaics and related methods for making solar cells, wherein the solar cell is made of ultrathin solar grade or low quality silicon. In an aspect, the invention is a method of making a solar cell by providing a solar cell substrate having a receiving surface and assembling a printable semiconductor element on the receiving surface of the substrate via contact printing. The semiconductor element has a thickness that is less than or equal to 100 .mu.m and, for example, is made from low grade Si.
Rogers; John A. (Champaign, IL), Rockett; Angus A. (Urbana, IL), Nuzzo; Ralph (Champaign, IL), Yoon; Jongseung (Urbana, IL), Baca; Alfred (Urbana, IL)
The Board of Trustees of the University of Illinois (Urbana, IL)
14/ 173,525
February 5, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made at least in part with government support under DE-FG02-07ER46453 and DE-FG02-07ER46471 awarded by the U.S. Department of Energy and DMI-0328162 awarded by the National Science Foundation. The government has certain rights in the invention.