Zobrazeno 1 - 10
of 429
pro vyhledávání: '"Robert W Collins"'
Autor:
Dhurba R. Sapkota, Balaji Ramanujam, Puja Pradhan, Mohammed A. Razooqi Alaani, Ambalanath Shan, Michael J. Heben, Sylvain Marsillac, Nikolas J. Podraza, Robert W. Collins
Publikováno v:
Materials, Vol 17, Iss 16, p 4048 (2024)
Flux calibrations in multi-source thermal co-evaporation of thin films have been developed based on real-time spectroscopic ellipsometry (RTSE) measurements. This methodology has been applied to fabricate CuInSe2 (CIS) thin film photovoltaic (PV) abs
Externí odkaz:
https://doaj.org/article/05855fac5f75467f81f6c0b149648b2b
Autor:
Khagendra P. Bhandari, Dhurba R. Sapkota, Manoj K. Jamarkattel, Quenton Stillion, Robert W. Collins
Publikováno v:
Nanomaterials, Vol 13, Iss 11, p 1795 (2023)
Zinc oxide (ZnO) nanoparticles have shown great potential because of their versatile and promising applications in different fields, including solar cells. Various methods of synthesizing ZnO materials have been reported. In this work, controlled syn
Externí odkaz:
https://doaj.org/article/62cd9e35ec9440f2a498a781a88b1f88
Autor:
Mohammed A. Razooqi Alaani, Prakash Koirala, Adam B. Phillips, Geethika K. Liyanage, Rasha A. Awni, Dhurba R. Sapkota, Balaji Ramanujam, Michael J. Heben, Stephen K. O’Leary, Nikolas J. Podraza, Robert W. Collins
Publikováno v:
Materials, Vol 14, Iss 19, p 5649 (2021)
Motivated by their utility in CdTe-based thin film photovoltaics (PV) devices, an investigation of thin films of the magnesium-zinc oxide (MgxZn1−xO or MZO) alloy system was undertaken applying spectroscopic ellipsometry (SE). Dominant wurtzite pha
Externí odkaz:
https://doaj.org/article/2eda527c197945e7a62320c31b87f38f
Autor:
Ramez Hosseinian Ahangharnejhad, Adam B. Phillips, Zhaoning Song, Ilke Celik, Kiran Ghimire, Prakash Koirala, Randy J. Ellingson, Robert W. Collins, Nikolas J. Podraza, Yanfa Yan, Michael J. Heben
Publikováno v:
Sustainable Energy & Fuels. 6:2718-2726
The calculated levelized cost of electricity for single junction and tandem devices show that when the time for perovskite devices to degrade to 85% of the original output (T85) is only 3 years, tandem device are economically favorable.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5225ea9519bc7d8f0c41f4174dbc52ce
https://doi.org/10.1039/d2se00029f
https://doi.org/10.1039/d2se00029f
Publikováno v:
Materials, Vol 13, Iss 19, p 4259 (2020)
A new method combining in-situ real-time spectroscopic ellipsometry and optical modeling to optimize the thickness of an anti-reflective (AR) coating for Cu(In,Ga)Se2 (CIGS) solar cells is described and applied directly to fabricate devices. The mode
Externí odkaz:
https://doaj.org/article/d8a5af1dc92243b4915df4f5addd3e45
Autor:
Grace Rajan, Krishna Aryal, Shankar Karki, Puruswottam Aryal, Robert W. Collins, Sylvain Marsillac
Publikováno v:
Journal of Spectroscopy, Vol 2018 (2018)
In view of the large-scale utilization of Cu(In,Ga)Se2 (CIGS) solar cells for photovoltaic application, it is of interest not only to enhance the conversion efficiency but also to reduce the thickness of the CIGS absorber layer in order to reduce the
Externí odkaz:
https://doaj.org/article/85d9b1d6923841cd936be8e1ef1bbb6c
Publikováno v:
2022 IEEE 49th Photovoltaics Specialists Conference (PVSC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::211b1d440378f151a54ee0f11e2e333d
https://doi.org/10.1109/pvsc48317.2022.9938866
https://doi.org/10.1109/pvsc48317.2022.9938866
Autor:
Biwas Subedi, Niva K. Jayswal, Suman Rijal, Nikolas J. Podraza, Zhaoning Song, Yanfa Yan, Robert W. Collins, Indra Subedi
Publikováno v:
2022 IEEE 49th Photovoltaics Specialists Conference (PVSC).
Sb2Se3 has become a promising absorber layer material for photovoltaic applications because of its attractive optical properties and rapid improvement in Sb2Se3 solar cell efficiency in recent years. The indirect bandgap and Urbach energy of Sb2Se3 h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5748a85bdc762a6b4cbe54716ccf74cd
https://doi.org/10.1109/pvsc48317.2022.9938582
https://doi.org/10.1109/pvsc48317.2022.9938582
Autor:
Dhurba R. Sapkota, Ambalanath Shan, Balaji Ramanujam, Puja Pradhan, Richard Irving, Adam B. Phillips, Michael J. Heben, Randy J. Ellingson, Sylvain Marsillac, Nikolas J. Podraza, Robert W. Collins
Publikováno v:
2022 IEEE 49th Photovoltaics Specialists Conference (PVSC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e39fcf164ddfa85b115cc85dd2012570
https://doi.org/10.1109/pvsc48317.2022.9938652
https://doi.org/10.1109/pvsc48317.2022.9938652
Autor:
Dipendra Adhikari, Maxwell M. Junda, Corey R. Grice, Sylvain X. Marsillac, Robert W. Collins, Nikolas J. Podraza
Publikováno v:
Materials, Vol 12, Iss 10, p 1699 (2019)
Nanocrystalline hydrogenated silicon (nc-Si:H) substrate configuration n-i-p solar cells have been fabricated on soda lime glass substrates with active absorber layers prepared by plasma enhanced chemical vapor deposition (PECVD) and radio frequency
Externí odkaz:
https://doaj.org/article/3f48b16e113040a584f790790bb819a5