Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Niranjana Mohan-Kumar"'
Autor:
Niranjana Mohan Kumar, Srisuda Rojsatien, Trumann Walker, Tara Nietzold, Barry Lai, Arun K.M. Kanakkithodi, Maria Chan, Dan Mao, Mariana Bertoni
Publikováno v:
2022 IEEE 49th Photovoltaics Specialists Conference (PVSC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffdeebfa19342a0db76ebf43d10360f8
https://doi.org/10.1109/pvsc48317.2022.9938892
https://doi.org/10.1109/pvsc48317.2022.9938892
Autor:
Niranjana Mohan Kumar, Madhan K. Arulanandam, Kevin Tyler, Jennifer Drayton, Ramesh Pandey, James R. Sites, Richard R. King
Publikováno v:
IEEE Journal of Photovoltaics. 10:690-695
II–VI/Si tandem solar cells have strong potential for high efficiency at low cost by combining the two most widely used solar cell materials: silicon and cadmium telluride (CdTe). However, there are challenges with this merger, as loss of minority-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc7abf21792a3348c70d70d1e699af09
https://doi.org/10.1109/jphotov.2019.2961607
https://doi.org/10.1109/jphotov.2019.2961607
Autor:
Eric Colegrove, Michael Stuckelberger, Mariana I. Bertoni, Niranjana Mohan Kumar, Trumann Walker, Abdul R. Shaik, Tara Nietzold, Barry Lai
Publikováno v:
2021 IEEE 48th Photovoltaic Specialists Conference (PVSC).
Copper is a traditional dopant for many types of polycrystalline thin-film CdTe photovoltaic devices. However, Cu can easily distribute through the depth and breadth of the device, segregating at interfaces or grain boundaries and leading to metastab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f9e650612986f0488fe89475ea94601
https://doi.org/10.1109/pvsc43889.2021.9518830
https://doi.org/10.1109/pvsc43889.2021.9518830
Autor:
Trumann Walker, Tara Nietzold, Niranjana Mohan Kumar, Barry Lai, Kevin Stone, Michael E. Stuckelberger, Mariana I. Bertoni
Publikováno v:
Review of scientific instruments 93(6), 065113-(2022). doi:10.1063/5.0087050
Review of scientific instruments 93(6), 065113 - (2022). doi:10.1063/5.0087050
It is widely accepted that micro- and nanoscale inhomogeneities govern the performance of many thin-film solar cell absorbers. These inhomogeneities yield material pr
It is widely accepted that micro- and nanoscale inhomogeneities govern the performance of many thin-film solar cell absorbers. These inhomogeneities yield material pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38791484915d0f956f7739c8f4c5ac7a
https://doi.org/10.1063/5.0087050
https://doi.org/10.1063/5.0087050
Autor:
Niranjana Mohan Kumar, Eric Colegrove, Barry Lai, Trumann Walker, Mariana I. Bertoni, Michael Stuckelberger, Tara Nietzold, Abdul R. Shaik
Publikováno v:
2020 47th IEEE Photovoltaic Specialists Conference (PVSC).
For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastability in CdTe. Recently a low activation energy has been reported for the thermal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e37d0709d39e44d8971a33047b82fd5a
https://doi.org/10.1109/pvsc45281.2020.9300979
https://doi.org/10.1109/pvsc45281.2020.9300979
Autor:
James R. Sites, Niranjana Mohan Kumar, Kevin Tyler, Richard R. King, Ramesh Pandey, Christopher Gregory, Jennifer Drayton
Publikováno v:
2020 47th IEEE Photovoltaic Specialists Conference (PVSC).
Cadmium telluride and silicon are among the widely used absorber materials in photovoltaic industry. A tandem solar cell of these two can absorb significant portion of solar spectrum to yield high efficiency due to the added voltage of the two solar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1745ef6cce16b4017ebbf1dbd0bbdfd
https://doi.org/10.1109/pvsc45281.2020.9300571
https://doi.org/10.1109/pvsc45281.2020.9300571
Autor:
Felix Wittwer, Trumann Walker, Niranjana Mohan-Kumar, Michael Stuckelberger, Eric Colegrove, Tara Nietzold, Maik Kahnt, Mariana I. Bertoni, Christina Ossig, Barry Lai, Damien Salomon
Publikováno v:
Nano Energy. 91:106595
For decades, Cu has been the primary dopant in CdTe photovoltaic absorbers. Typically, Cu acceptor concentrations in these devices are on the order of 1 × 1014 cm−3, which has made it notoriously difficult to directly correlate nanoscale Cu distri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::445bc1c9d17b9a6a5b1bb634d2f6aa58
https://doi.org/10.1016/j.nanoen.2021.106595
https://doi.org/10.1016/j.nanoen.2021.106595
Autor:
Niranjana Mohan Kumar, Robert L. Opila, Richard R. King, Chaomin Zhang, Abhishek Iyer, Madhan K. Arulanandam
Publikováno v:
2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).
The analysis of Auger-corrected inverse minoritycarrier lifetime as a function of excess carrier concentration can impart information about many crucial solar cell material properties including: emitter saturation current density (J o ), surface reco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43fc128035fa6af367b8242d7d337111
https://doi.org/10.1109/pvsc40753.2019.8981188
https://doi.org/10.1109/pvsc40753.2019.8981188
Autor:
Jennifer Drayton, Kevin Tyler, Madhan K. Arulanandam, Richard R. King, Niranjana Mohan Kumar, Ramesh Pandey, James R. Sites
Publikováno v:
2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).
An intricate look is taken at the methods used to account for variance in minority-carrier lifetime in the silicon bottom cell of II-VI/Si tandem solar cells. A discussion on the modeling is provided. Lateral wafer variance is determined to be much l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::154c62584da74d6302cc228ce2bbee93
https://doi.org/10.1109/pvsc40753.2019.8980707
https://doi.org/10.1109/pvsc40753.2019.8980707
Publikováno v:
2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).
Passivation of dangling bonds at surfaces and interfaces is an essential feature of high-efficiency solar cells. The high recombination activity of surface states in III-V semiconductors typically requires epitaxial growth of high-bandgap layers to s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6a410ce3859429e66ca0c8aac0df1d5
https://doi.org/10.1109/pvsc40753.2019.8980913
https://doi.org/10.1109/pvsc40753.2019.8980913