Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Kannan Ramanathan"'
Publikováno v:
International Journal of Public Sector Management. 33:731-749
PurposeThe purpose of this study is to examine the impact of New Public Management (NPM) reforms/practices on innovation in public sector organizations. Although much is written on NPM, the assumption that NPM reforms stimulate organizational innovat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::491256f7c4c188223d45adec15e2a073
https://doi.org/10.1108/ijpsm-04-2020-0106
https://doi.org/10.1108/ijpsm-04-2020-0106
Autor:
Kannan Ramanathan, Monika Blum, Kimberly Horsley, Clemens Heske, Wanli Yang, Lorelle M. Mansfield, Michelle Mezher, Lothar Weinhardt
Publikováno v:
ACS Applied Energy Materials. 2:8641-8648
We present a comparative study that focuses on the variability of post-deposition treatments (NaF-PDT and KF-PDT) and their impact on the chemical and electronic structure of chalcopyrite thin film...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a7fe3f8cddf9f2379537c2faf091c1f
https://doi.org/10.1021/acsaem.9b01565
https://doi.org/10.1021/acsaem.9b01565
Autor:
Kannan Ramanathan, Jian V. Li, Lorelle M. Mansfield, Timothy J. Anderson, Christopher P. Muzzillo
Publikováno v:
Solar Energy Materials and Solar Cells. 185:45-53
To advance knowledge of the beneficial effects of K in Cu(In,Ga)(Se,S)2 (CIGS) photovoltaic (PV) absorbers, recent Cu-K-In-Se phase growth studies have been extended to PV performance. First, the effect of distributing K throughout bulk Cu1-xKxInSe2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a346354bcee70a14d6bed4e30650d2b
https://doi.org/10.1016/j.solmat.2018.05.013
https://doi.org/10.1016/j.solmat.2018.05.013
Autor:
Zhibo Zhao, Sachit Grover, Brian Keyes, Feng Liao, Ingrid Repins, Miguel A. Contreras, Rommel Noufi, Kannan Ramanathan, Sanjoy Paul, Jian V. Li
Publikováno v:
IEEE Journal of Photovoltaics. 8:871-878
The open-circuit voltage ( V OC) in a generic TCO/buffer/absorber/back-contact thin-film solar cell device is a key parameter in the recombination analysis. In particular, V OC is sensitively influenced by the interface recombination at the buffer/ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d0d49febffc9bdb2afd81c68780855f
https://doi.org/10.1109/jphotov.2018.2819664
https://doi.org/10.1109/jphotov.2018.2819664
Autor:
Kannan Ramanathan, Jian V. Li, Rebekah L. Garris, Harvey Guthrey, Lorelle M. Mansfield, Steve Johnston
Publikováno v:
Solar Energy Materials and Solar Cells. 174:77-83
In a previous paper [1], we reported on Cu(In,Ga)Se2-based (CIGS) solar cell samples collected from different research laboratories and industrial companies with the purpose of understanding the range of CIGS materials that can lead to high-quality a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::509bb3effaa007ad7279df153fb58044
https://doi.org/10.1016/j.solmat.2017.08.027
https://doi.org/10.1016/j.solmat.2017.08.027
Autor:
Dimosthenis Sokaras, Katherine E. Hurst, Tsu-Chien Weng, Arrelaine A. Dameron, David Prendergast, Steven T. Christensen, Miguel A. Contreras, Kannan Ramanathan, Lorelle M. Mansfield, Craig P. Schwartz, Dennis Nordlund
Publikováno v:
Solar Energy Materials and Solar Cells. 160:390-397
The surface and near surface structure of copper-indium-gallium-selenide (CIGS) absorber layers is integral to the producing a high-quality photovoltaic junction. By using X-ray absorption spectroscopy (XAS) and monitoring multiple elemental absorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da751c48db14df7dd28dea7a1005fdfe
https://doi.org/10.1016/j.solmat.2016.11.003
https://doi.org/10.1016/j.solmat.2016.11.003
Autor:
William N. Shafarman, Rebekah L. Garris, Lorelle M. Mansfield, Kahl D. Counts, Christopher P. Thompson, Kannan Ramanathan, James R. Sites
Publikováno v:
IEEE Journal of Photovoltaics. 7:286-293
Cu(In, Ga)Se2 (CIGS)-based solar cells from six fabricators were characterized and compared. The devices had differing substrates, absorber deposition processes, buffer materials, and contact materials. The effective bandgaps of devices varied from 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db30e74adec24b42a67cfc0d13b15c97
https://doi.org/10.1109/jphotov.2016.2616188
https://doi.org/10.1109/jphotov.2016.2616188
Publikováno v:
IEEE Journal of Photovoltaics. 7:281-285
In Cu(In,Ga)Se2 (CIGS) solar cells, CdS and Zn(O,S) buffer layers were compared with a hybrid buffer layer consisting of thin CdS followed Zn(O,S). We explore the physics of this hybrid layer that combines the standard (Cd) approach with the alternat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63b259115ea8c3c281a48302bc21d60c
https://doi.org/10.1109/jphotov.2016.2617041
https://doi.org/10.1109/jphotov.2016.2617041
Autor:
Rebekah L. Garris, Dirk Hauschild, Douglas A. Duncan, Marcus Bär, Wanli Yang, Kannan Ramanathan, Michelle Mezher, Monika Blum, Lothar Weinhardt, Kimberly Horsley, Clemens Heske, Lorelle M. Mansfield
Publikováno v:
ACS Applied Materials & Interfaces. 8:33256-33263
The chemical structure of the Zn(O,S)/Cu(In,Ga)Se2 interface in high-efficiency photovoltaic devices is investigated using X-ray photoelectron and Auger electron spectroscopy, as well as soft X-ray emission spectroscopy. We find that the Ga/(Ga+In) r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7eb6d91c34bdbcb45bd86274b5bb8085
https://doi.org/10.1021/acsami.6b09245
https://doi.org/10.1021/acsami.6b09245
Autor:
Dennis Nordlund, Craig P. Schwartz, Kannan Ramanathan, Dimosthenis Sokaras, David Prendergast, Katherine E. Hurst, Aditi S. Krishnapriyan, Lorelle M. Mansfield, Steven T. Christensen, Tsu-Chien Weng
Publikováno v:
Solar Energy Materials and Solar Cells. 149:275-283
A systematic investigation of the electronic structure of the CdS buffer layer of CIGS solar cells has been undertaken using S K-edge X-ray absorption spectroscopy (XAS), both experimentally and theoretically. We found from XAS that growing CdS films
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ece9060e68f27a8617decb662f526a6
https://doi.org/10.1016/j.solmat.2016.01.043
https://doi.org/10.1016/j.solmat.2016.01.043