@inproceedings{1924bdd8c4a34f2b9d63cbbed4b62f1c,
title = "Theoretical efficiency limits of a 2 terminal dual junction step cell",
abstract = "In this paper we present theoretical analysis for upper efficiency limit of a novel 2 terminal dual junction stepcell. Results show that step cell design relaxes bandgap requirements for efficient tandem cell. While conventional tandem cell with optimized bandgap combination (1.64 / 0.96 eV) has the highest efficiency (45.78 %), the step-cell design provides significant efficiency improvement for cells with non-optimized bandgap values. Efficiency upper limit for Si based step-cell with top cell bandgap equal to 1.41 eV (∼ GaAs), efficiency upper limit increases from ∼21% in conventional tandem cell to 38.7% for optimized step-cell design. Step-cell design provides opportunity for wider selection of materials used in tandem solar cell applications.",
keywords = "detailed balance method, Multijunction solar cells, silicon, step-cell, theoretical efficiency limit",
author = "Hadi, {Sabina Abdul} and Tim Milakovich and Mayank Bulsara and Evelina Polyzoeva and Fitzgerald, {Eugene A.} and Hoyt, {Judy L.} and Ammar Nayfeh",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 ; Conference date: 14-06-2015 Through 19-06-2015",
year = "2015",
month = dec,
day = "14",
doi = "10.1109/PVSC.2015.7356122",
language = "British English",
series = "2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015",
address = "United States",
}