153 citations · 340 across the 11 of their papers we have counts for
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A Markov Chain Approach for Defining the Fundamental Efficiency Limits of Classical and Bifacial Multi-junction Tandem Solar Cells
Muhammad A. Alam, M. Ryyan Khan
Bifacial tandem cells promise to reduce three fundamental losses (above-bandgap, below bandgap, and the uncollected light between panels) inherent in classical single junction PV s…
Bifacial Si Heterojunction-Perovskite Organic-Inorganic Tandem to Produce Highly Efficient Solar Cell
Reza Asadpour, Raghu V. K. Chavali, M. Ryyan Khan +1
As single junction thin-film technologies, both Si heterojunction (HIT) and Perovskite based solar cells promise high efficiencies at low cost. One expects that a tandem cell desig…
Thermodynamic Limits of Solar Cells with Non-ideal Optical Response
M. Ryyan Khan, Peter Bermel, Muhammad A. Alam
The Shockley-Queisser (S-Q) theory defines the thermodynamic upper limits for Jsc, Voc, FF, and efficiency of a solar cell. The classical calculation assumes an abrupt onset of abs…
Fundamentals of PV Efficiency: Limits for Light Absorption
M. Ryyan Khan, Xufeng Wang, Muhammad A. Alam
A simple thermodynamic argument related to a (weakly absorbing) finite dielectric slab illuminated by sunlight- originally suggested by Yablonovich- leads to the conclusion that th…