T
Thomas Heumüller
Researcher at University of Erlangen-Nuremberg
Publications - 39
Citations - 2937
Thomas Heumüller is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Organic solar cell & Perovskite (structure). The author has an hindex of 17, co-authored 22 publications receiving 2115 citations. Previous affiliations of Thomas Heumüller include Stanford University.
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Journal ArticleDOI
Hysteresis and transient behavior in current–voltage measurements of hybrid-perovskite absorber solar cells
Eva L. Unger,Eric T. Hoke,Eric T. Hoke,Colin D. Bailie,William H. Nguyen,Andrea R. Bowring,Thomas Heumüller,Mark G. Christoforo,Michael D. McGehee +8 more
TL;DR: In this article, the authors observe slow transient effects causing hysteresis in the current-voltage characterization of hybrid organo-metal halide perovskites that can lead to an over- or underestimation of the solar cell device efficiency.
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A History and Perspective of Non-Fullerene Electron Acceptors for Organic Solar Cells
Ardalan Armin,Wei Li,Oskar J. Sandberg,Zuo Xiao,Liming Ding,Jenny Nelson,Dieter Neher,Koen Vandewal,Safa Shoaee,Tao Wang,Harald Ade,Thomas Heumüller,Christoph J. Brabec,Paul Meredith +13 more
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Characterization of the polymer energy landscape in polymer:fullerene bulk heterojunctions with pure and mixed phases
Sean Sweetnam,Kenneth R. Graham,Kenneth R. Graham,Guy Olivier Ngongang Ndjawa,Thomas Heumüller,Jonathan A. Bartelt,Timothy M. Burke,Wentao Li,Wei You,Aram Amassian,Michael D. McGehee +10 more
TL;DR: Cyclic voltammetry, UV-vis absorption, and ultraviolet photoelectron spectroscopy are used to characterize hole energy levels in the polymer phases of polymer:fullerene bulk heterojunctions to improve charge separation and reduce recombination in polymer solar cells (PSCs).
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The role of exciton lifetime for charge generation in organic solar cells at negligible energy-level offsets
Andrej Classen,Christos L. Chochos,Larry Lüer,Vasilis G. Gregoriou,Jonas Wortmann,Andres Osvet,Karen Forberich,Iain McCulloch,Iain McCulloch,Thomas Heumüller,Christoph J. Brabec +10 more
TL;DR: In this article, the authors investigate organic solar cell blends with highest occupied molecular orbital energy-level offsets (∆EHOMO) between the donor and acceptor that range from 0 to 300 meV.
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Renewed Prospects for Organic Photovoltaics.
Guichuan Zhang,Francis Lin,Feng Xiao Qi,Thomas Heumüller,Andreas Distler,Hans-Joachim Egelhaaf,Ning Li,Philip C. Y. Chow,Christoph J. Brabec,Alex K.-Y. Jen,Hin-Lap Yip +10 more
TL;DR: The development and application of NFAs with an A-D-A configuration (where A = acceptor and D = donor) has enabled devices to have efficient charge generation and small energy losses (Eloss < 0.6 eV), resulting in substantially higher power conversion efficiencies (PCEs) than FA-based devices as discussed by the authors .