Hydrostatic pressure-induced modifications of structural transitions lead to large enhancements of magnetocaloric effects in MnNiSi-based systems T Samanta, DL Lepkowski, AU Saleheen, A Shankar, J Prestigiacomo, ... Physical Review B 91 (2), 020401, 2015 | 108 | 2015 |
Barocaloric and magnetocaloric effects in (MnNiSi) 1− x (FeCoGe) x T Samanta, P Lloveras, A Us Saleheen, DL Lepkowski, E Kramer, ... Applied Physics Letters 112 (2), 2018 | 74 | 2018 |
Effects of hydrostatic pressure on magnetostructural transitions and magnetocaloric properties in (MnNiSi) 1− x (FeCoGe) x T Samanta, DL Lepkowski, AU Saleheen, A Shankar, J Prestigiacomo, ... Journal of Applied Physics 117 (12), 2015 | 56 | 2015 |
Asymmetric switchinglike behavior in the magnetoresistance at low fields in bulk metamagnetic Heusler alloys T Samanta, A Us Saleheen, DL Lepkowski, A Shankar, I Dubenko, ... Physical Review B 90 (6), 064412, 2014 | 32 | 2014 |
Toward> 25% efficient monolithic epitaxial GaAsP/Si tandem solar cells TJ Grassman, DL Lepkowski, JT Boyer, DJ Chmielewski, C Yi, N Western, ... 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 0734-0737, 2019 | 22 | 2019 |
23.4% monolithic epitaxial GaAsP/Si tandem solar cells and quantification of losses from threading dislocations DL Lepkowski, TJ Grassman, JT Boyer, DJ Chmielewski, C Yi, MK Juhl, ... Solar Energy Materials and Solar Cells 230, 111299, 2021 | 18 | 2021 |
Reduced dislocation introduction in III–V/Si heterostructures with glide-enhancing compressively strained superlattices JT Boyer, AN Blumer, ZH Blumer, DL Lepkowski, TJ Grassman Crystal Growth & Design 20 (10), 6939-6946, 2020 | 18 | 2020 |
Investigation of Rear-Emitter GaAs0.75P0.25 Top Cells for Application to III–V/Si Tandem Photovoltaics DL Lepkowski, JT Boyer, DJ Chmielewski, AC Silvaggio, SA Ringel, ... IEEE Journal of Photovoltaics 9 (6), 1644-1651, 2019 | 14 | 2019 |
The critical role of AlInP window design in III–V rear-emitter solar cells DL Lepkowski, T Kasher, JT Boyer, DJ Chmielewski, TJ Grassman, ... IEEE Journal of Photovoltaics 10 (3), 758-764, 2020 | 12 | 2020 |
HIGH PERFORMANCE METAMORPHIC TUNNEL JUNCTIONS FOR GAASP/SI TANDEM SOLAR CELLS GROWN VIA MOCVD D Chmielewski, D Lepkowski, J Boyer, J Carlin, T Grassman, S Ringel IEEE WCPEC 7, 2018 | 11 | 2018 |
Correlation of early-stage growth process conditions with dislocation evolution in MOCVD-based GaP/Si heteroepitaxy JT Boyer, AN Blumer, ZH Blumer, DL Lepkowski, TJ Grassman Journal of Crystal Growth 571, 126251, 2021 | 9 | 2021 |
Loss analysis and design strategies enabling> 23% GaAsP/Si tandem solar cells DL Lepkowski, JT Boyer, C Yi, AH Soeriyadi, ZH Blumer, MK Juhl, ... 2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 1884-1886, 2020 | 8 | 2020 |
Optimization of a GaAsP top cell for implementation in a III-V/Si tandem structure AC Silvaggio, DL Lepkowski, DJ Chmielewski, JT Boyer, SA Ringel, ... 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), 2554-2557, 2017 | 8 | 2017 |
INVESTIGATION OF REAR EMITTER GAASP TOP CELLS FOR USE IN III-V/SI TANDEM PHOTOVOLTAICS D Lepkowski, J Boyer, D Chmielewski, A Silvaggio, S Ringel, T Grassman IEEE WCPEC-7, 2018 | 6 | 2018 |
Designing an Epitaxially-Integrated DBR for Dislocation Mitigation in Monolithic GaAsP/Si Tandem Solar Cells DL Lepkowski, T Kasher, TJ Grassman, SA Ringel IEEE Journal of Photovoltaics 11 (2), 400-407, 2020 | 5 | 2020 |
Effect of silicon front surface doping profile on GaP/Si heterostructure for III-V/GaP/Si multi-junction solar cells C Yi, FJ Ma, H Mehrvarz, D Lepkowski, J Boyer, D Chmielewski, JA Carlin, ... 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)(A …, 2018 | 5 | 2018 |
Modeling and experimental demonstration of short-wavelength carrier collection enhancement in Ga0. 51In0. 49P solar cells using graded (AlzGa1-z) xIn1-xP window-emitter structures JT Boyer, DL Lepkowski, DJ Chmielewski, TJ Grassman Solar Energy Materials and Solar Cells 202, 110133, 2019 | 4 | 2019 |
Metamorphic Tunnel Junctions Grown Via MOCVD Designed for GaAs0.75P0.25/Si Tandem Solar Cells DJ Chmielewski, DL Lepkowski, JT Boyer, TJ Grassman, SA Ringel IEEE Journal of Photovoltaics 11 (2), 408-414, 2021 | 3 | 2021 |
Comparative Study of∼ 2.05 eV Lattice-Matched and Metamorphic (Al) GaInP Solar Cells Grown by MOCVD DJ Chmielewski, DL Lepkowski, JT Boyer, TJ Grassman, SA Ringel IEEE Journal of Photovoltaics 8 (6), 1601-1607, 2018 | 3 | 2018 |
Development and Characterization of III-V/Si Multijunction Photovoltaics for Space Application JT Boyer, DL Lepkowski, DJ Chmielewski, D Derkacs, C Kerestes, ... 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 2822-2825, 2019 | 2 | 2019 |