Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Hadley F. Myers"'
Publikováno v:
Journal of Crystal Growth. 387:36-40
Transport and other measurements have been made on CuInSe2+x samples obtained from Bridgman ingots grown from melts containing controlled amounts of elemental sodium, where x represents the excess of Se over stoichiometry. Thermoelectric power and Ha
Publikováno v:
2013 IEEE 39th Photovoltaic Specialists Conference (PVSC).
Measurements of optical absorption coefficient (α) were made on Bridgman-grown CuInSe2 samples, over the wavelength range 1300 to 1600 nm, at room temperature. The samples were obtained from multi-crystalline ingots, grown from melts of composition
Publikováno v:
2012 38th IEEE Photovoltaic Specialists Conference.
In the fabrication of CIGS-based solar cells, the incorporation of sodium to increase performance is now standard practice. Because grain boundaries may play a role in the Na action, in this laboratory, studies have been made of the effects of introd
Publikováno v:
2011 37th IEEE Photovoltaic Specialists Conference.
In otherwise stoichiometric Bridgman-grown CuInSe 2 , it has been found, in this laboratory, that the conductivity type changes from p- to n-type when more than 0.25 at. % of elemental sodium is added to the melt. For melts with excess selenium over
Publikováno v:
2010 35th IEEE Photovoltaic Specialists Conference.
Ingots containing monocrystals of CuInSe 2 have been fabricated, using a Bridgman-growth procedure, in quartz ampoules, to which varying concentrations of sodium and excess selenium have been added. The CuInSe 2 ingots were nominally p-type, but coul
Publikováno v:
2009 34th IEEE Photovoltaic Specialists Conference (PVSC).
Measurements of thermoelectric power (α) and electrical resistivity (ρ) were made at room temperature on filamentary samples of CuInSe2 (stoichiometric) and CuInSe 2.2 (excess Se), Bridgman-grown with added elemental sodium in the melt in the amoun
Publikováno v:
2009 34th IEEE Photovoltaic Specialists Conference (PVSC).
Polycrystalline ZnO thin films doped with Al are used as transparent conducting oxide (TCO) for solar cells. For such applications, it is necessary to have control on the contact resistance with metals. In this project, we observed the variation of c
Publikováno v:
2008 33rd IEEE Photovolatic Specialists Conference.
Ingots containing single crystals were grown from melts containing Cu, In and Se in either stoichiometric proportions (CuInSe 2 ) or with an excess of Se (CuInSe 2.2 ). In addition, elemental sodium Na0 was introduced to both sets of compositions in