R
Riley E. Brandt
Researcher at Massachusetts Institute of Technology
Publications - 48
Citations - 3234
Riley E. Brandt is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Thin film & Solar cell. The author has an hindex of 19, co-authored 47 publications receiving 2767 citations.
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Identifying defect-tolerant semiconductors with high minority-carrier lifetimes: beyond hybrid lead halide perovskites
TL;DR: In this paper, the authors propose that defect tolerance emerges from fundamental electronic-structure properties, including the orbital character of the conduction and valence band extrema, the chargecarrier effective masses, and the static dielectric constant.
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Methylammonium Bismuth Iodide as a Lead‐Free, Stable Hybrid Organic–Inorganic Solar Absorber
Robert L. Z. Hoye,Riley E. Brandt,Anna Osherov,Vladan Stevanović,Vladan Stevanović,Samuel D. Stranks,Samuel D. Stranks,Mark W. Wilson,Hyunho Kim,Austin Akey,John D. Perkins,Rachel C. Kurchin,Jeremy R. Poindexter,Evelyn N. Wang,Moungi G. Bawendi,Vladimir Bulovic,Tonio Buonassisi +16 more
TL;DR: Through MBI, this work demonstrates a lead-free and stable alternative to MAPbX3 that has a similar electronic structure and nanosecond lifetimes and found that MBI luminesces at room temperature, with the vapor-processed films exhibiting superior photoluminescence decay times that are promising for photovoltaic applications.
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Searching for “Defect-Tolerant” Photovoltaic Materials: Combined Theoretical and Experimental Screening
Riley E. Brandt,Jeremy R. Poindexter,Prashun Gorai,Prashun Gorai,Rachel C. Kurchin,Robert L. Z. Hoye,Lea Nienhaus,Mark W. Wilson,J. Alexander Polizzotti,Raimundas Sereika,R. Žaltauskas,Lana C. Lee,Judith L. MacManus-Driscoll,Moungi G. Bawendi,Vladan Stevanović,Vladan Stevanović,Tonio Buonassisi +16 more
TL;DR: In this paper, the authors proposed screening criteria for defect-tolerant photovoltaic (PV) absorbers, identifying several classes of semiconducting compounds with electronic structures similar to those of hybrid lead-halide perovskites.
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3.88% Efficient Tin Sulfide Solar Cells using Congruent Thermal Evaporation
Vera Steinmann,Rafael Jaramillo,Katy Hartman,Rupak Chakraborty,Riley E. Brandt,Jeremy R. Poindexter,Yun Seog Lee,Leizhi Sun,Alex Polizzotti,Helen Hejin Park,Roy G. Gordon,Tonio Buonassisi +11 more
TL;DR: It is confirmed that SnS evaporates congruently, which provides facile composition control akin to cadmium telluride, and is described, as a promising absorber material in thin-film photovoltaic devices.
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Atomic Layer Deposited Gallium Oxide Buffer Layer Enables 1.2 V Open-Circuit Voltage in Cuprous Oxide Solar Cells
Yun Seog Lee,Danny Chua,Riley E. Brandt,Sin Cheng Siah,Jian V. Li,Jonathan P. Mailoa,Sang Woon Lee,Roy G. Gordon,Tonio Buonassisi +8 more
TL;DR: The power conversion efficiency of solar cells based on copper (I) oxide (Cu2 O) is enhanced by atomic layer deposition of a thin gallium oxide (Ga2 O3 ) layer that exhibits an open-circuit voltage and efficiency of 3.97%, showing potential of over 7% efficiency.