id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
elements-8816	Solomon, Michelle; Johnson, Alison	New Research in Solar Cells: Urbach Tails and Open Circuit Voltage	2015	8	.pdf	application/pdf	4318	192	65	This, in addition to the tunability of absorption into the near infrared region should allow for an unprecedented increase in efficiency of photovoltaics, up to 66%.1 How- ever, experiment has not nearly reflected this theoretical increase, as quantum dot solar cells have only reached a maximum efficiency of 8.55%.2 Lead-halide perovskites, in contrast, have seen rapid prog- ress, up to the current confirmed record of 17.9%.3 Perovskites have a highly ordered crystal lattice that allows for good optical and electrical properties, but they are not unique in this characteristic. One way to mini- mize the cost is to decrease the amount of material by us- ing thin film solar cells.	cache/elements-8816.pdf	txt/elements-8816.txt