Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Emily C. Warmann"'
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2572-2584 (2019)
Abstract Spectrum‐splitting photovoltaics incorporate optical elements to separate sunlight into frequency bands, which can be targeted at solar cells with bandgaps optimized for each sub‐band. Here, we present the design of a holographic diffrac
Externí odkaz:
https://doaj.org/article/0681932eb99b4357a95b784a57e0d2e9
Autor:
Eleftherios Gdoutos, Samuel Loke, Pilar Espinet-Gonzalez, Tatiana G. Vinogradova, Emily C. Warmann, Sergio Pellegrino, Harry A. Atwater, Michael D. Kelzenberg, Ali Naqavi, Christophe Leclerc, Nina Vaidya
Publikováno v:
Acta Astronautica. 170:443-451
We present a detailed design treatment for a concentrating photovoltaic mini module subsystem with a specific power of up to 4.1 kW/kg for integration into a space solar power system. Concentrating designs are required to achieve specific power over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abc01581fb9339dcf16972ef7b7a0228
https://doi.org/10.1016/j.actaastro.2019.12.032
https://doi.org/10.1016/j.actaastro.2019.12.032
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2572-2584 (2019)
Spectrum‐splitting photovoltaics incorporate optical elements to separate sunlight into frequency bands, which can be targeted at solar cells with bandgaps optimized for each sub‐band. Here, we present the design of a holographic diffraction grat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c59e6af5e511794bfa895ffa173246c1
https://doaj.org/article/0681932eb99b4357a95b784a57e0d2e9
https://doaj.org/article/0681932eb99b4357a95b784a57e0d2e9
Autor:
Harry A. Atwater, Emily C. Warmann
Publikováno v:
IEEE Journal of Photovoltaics. 9:1596-1601
We provide 20 direct spectra that capture the variation of the solar spectrum composition with intensity. We correlate the value of the air mass, aerosol optical depth at 500 nm, precipitable water, and ozone with the cumulative irradiance for direct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8229ff091e4515112c24ccd403a48f07
https://doi.org/10.1109/jphotov.2019.2937236
https://doi.org/10.1109/jphotov.2019.2937236
Autor:
Harry A. Atwater, Cristofer A. Flowers, Carissa N. Eisler, Matthew D. Escarra, Sunita Darbe, Emily D. Kosten, Emily C. Warmann, John V. Lloyd, Pilar Espinet-Gonzalez, Weijun Zhou, Michelle Dee
Publikováno v:
IEEE Journal of Photovoltaics. 9:174-182
The most feasible pathway to record 50% efficiency photovoltaic devices is by utilizing many ( >4) junctions to minimize thermalization and nonabsorption losses. Here we propose a spectrum-splitting design, the polyhedral specular reflector (PSR), th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf9a755fec88102de9cebbb71b3764cb
https://doi.org/10.1109/jphotov.2018.2872109
https://doi.org/10.1109/jphotov.2018.2872109
Autor:
Dennis M. Callahan, Ali Naqavi, Emily C. Warmann, Tatiana G. Vinogradova, Nina Vaidya, Jing-Shun Huang, Samuel P. Loke, Harry A. Atwater, Tom Tiwald, Tatiana A. Roy, Pilar Espinet-Gonzalez, Michael D. Kelzenberg
We report the design, fabrication, and characterization of ultralight highly emissive structures with a record-low mass per area that emit thermal radiation efficiently over a broad spectral (2 to 30 microns) and angular (0-60°) range. The structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e18d1d7346c72b892f6b345ae1a4a69
https://resolver.caltech.edu/CaltechAUTHORS:20180801-164036246
https://resolver.caltech.edu/CaltechAUTHORS:20180801-164036246
Autor:
Samuel P. Loke, Philipp Saive, Eleftherios Gdoutos, Christophe Leclerc, Fabien Royer, Behrooz Abiri, Matan Gal-Katziri, Austin Fikes, Ali Naqavi, Michael D. Kelzenberg, Emily C. Warmann, Tatiana A. Roy, Pilar Espinet-Gonzalez, Florian Bohn, Nina Vaidya, Harry A. Atwater, Tatiana G. Vinogradova, Mohammed Reza M. Hashemi, Ali Hajimiri, Sergio Pellegrino
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
We have fabricated a functional prototype of an ultralight power converter tile; a modular building block for a space-based solar power system. The tile is $\sim 10\mathrm \times 15$ cm in area, and weighs $\sim 1.5$ kg/$\text{m}^{\mathbf {2}}$. It c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9563f0b99816a9e1034fdb05f65320d
https://doi.org/10.1109/pvsc.2018.8547403
https://doi.org/10.1109/pvsc.2018.8547403
Autor:
Emily C. Warmann, Harry A. Atwater
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
Changes in the incident spectrum under varying atmospheric conditions can degrade the performance of series connected tandem solar cells that are optimized for performance under the AM1.5D standard spectrum. We present a case study of optimizing seri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e34edb95e94e86adcb15c245f3e03eb
https://doi.org/10.1109/pvsc.2018.8547910
https://doi.org/10.1109/pvsc.2018.8547910
Autor:
Harry A. Atwater, Nina Vaidya, Pilar Espinet-Gonzalez, Fabien Royer, Florian Bohn, Eleftherios Gdoutos, Mohammed Reza M. Hashemi, Michael D. Kelzenberg, Matan Gal-Katziri, Emily C. Warmann, Behrooz Abiri, Christophe Leclerc, Austin Fikes, Ali Hajimiri, Sergio Pellegrino
Publikováno v:
2018 AIAA Spacecraft Structures Conference.
We demonstrate the development of a prototype lightweight (1.5 kg/m^3) tile structure capable of photovoltaic solar power capture, conversion to radio frequency power, and transmission through antennas. This modular tile can be repeated over an arbit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72987ffe8d27cdbfa61c0211a56bc7f1
https://doi.org/10.2514/6.2018-2202
https://doi.org/10.2514/6.2018-2202
Autor:
Emily C. Warmann, Chris Peterson, Colin J. Mann, Jing-Shun Huang, Tatiana G. Vinogradova, Harry A. Atwater, Alexander J. Messer, Ali Naqavi, Sergio Pellegrino, Pilar Espinet-Gonzalez, Samuel P. Loke, Michael D. Kelzenberg, Nina Vaidya, Don Walker
Publikováno v:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
Concentrator photovoltaic systems can provide supplementary shielding against high energy particles. In this paper we compare the radiation environment that the same solar cell would experience in a flat-plate module versus in a parabolic mirror conc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c77b65dd60616a9391db759c748bc917
https://doi.org/10.1109/pvsc.2017.8366020
https://doi.org/10.1109/pvsc.2017.8366020