Evaluation of Absorber Layer Prospects in Lead-Iodide Perovskite Solar Cells
2020-10
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Evaluation of Absorber Layer Prospects in Lead-Iodide Perovskite Solar Cells
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2020-10
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Abstract
Perovskite solar cells (PSCs) are a relatively young and aspiring option for future generations ofphotovoltaic solar cells. Currently, before this specific type of solar cell can be used in industry,
several problems must be overcome with the design of the cell. Perovskite solar cells are
currently produced on a small scale in a laboratory and currently have a limited life span due to
defects in materials, issues with excess heat generation, and other longevity issues. The
absorption layer of the solar cell has been heavily studied with researchers making slight
modifications to attempt to cure these issues. The most common absorption layer used in PSCs
is comprised of methyl ammonium iodide (MAI) and lead iodide, creating methyl ammonium
lead iodide (MAPI). Researchers have made modifications like adjusting the iodide levels by
fractioning, or completely substituting, chloride and/or bromide. This method has allowed for
some gains in the longevity of PSCs; however, all options should be considered. This study views
alternative options for the absorption material by substituting MAI with three different
compounds: ammonium hydroxide, ethyl ammonium iodide, and methyl trifluoroborate. Our
results provide evidence for crystalline structures formed by these possible replacement
compounds and shed some light on the absorbance capable by these replacements.
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University of Minnesota M.S.Ch.E. thesis. 2020. Major: Chemical Engineering. Advisor: Zhihua Xu. 1 computer file (PDF); 72 pages.
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Miller, Alex. (2020). Evaluation of Absorber Layer Prospects in Lead-Iodide Perovskite Solar Cells. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/219399.
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