Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Thomas, Tiedje"'
Autor:
Thomas Tiedje, D. Akira Engelbrecht
Publikováno v:
IEEE Journal of Photovoltaics. 11:73-84
The temperature and intensity dependence of the limiting efficiencies of monofacial and bifacial silicon solar cells are calculated from the physical properties of silicon assuming light trapping by Lambertian scattering from rough surfaces. The maxi
Publikováno v:
Solar Energy Materials and Solar Cells. 245:111800
Autor:
Thomas Tiedje, D. Akira Engelbrecht
Publikováno v:
2021 IEEE 48th Photovoltaic Specialists Conference (PVSC).
We show that the efficiency of a suitably designed two-terminal GaAs/Si tandem PV cell is insensitive to current matching and therefore well suited for bifacial operation. The efficiency of a bifacial GaAs/Si tandem cell is calculated using experimen
Publikováno v:
Materials Letters. 236:649-652
Zn3-3xMg3xN2 alloy layers with x ≤ 0.3 can be epitaxially grown at a temperature as low as 140 °C. The bandgap (Eg) of Zn3-3xMg3xN2 widens from 1.2 to 2.5 eV with increasing x. The Eg value of 1.4 eV is obtained at x = 0.18, and the x = 0.18 film
Autor:
Thomas Tiedje, D. Akira Engelbrecht
Publikováno v:
2020 47th IEEE Photovoltaic Specialists Conference (PVSC).
The limiting efficiency of bifacial silicon solar cells is calculated numerically as a function of temperature from the physical properties of silicon and found to be 0.54% (absolute) less than monofacial cells at room temperature. The optimum thickn
Autor:
Kamuran Kara, Ryan B. Lewis, Elif Akalin, M. Aslan, Ayse Erol, Thomas Tiedje, Vahid Bahrami-Yekta
Publikováno v:
Journal of Alloys and Compounds. 722:339-343
We study structural properties and surface formation of undoped, n- and p-type doped GaAsBi alloys with various bismuth compositions using Micro-Raman, Fourier Transform (FT) Raman, Photoluminescence (PL) and Atomic Force Microscopy (AFM) techniques.
Autor:
Thomas Tiedje, Faezeh Fesharaki, Afshin Jooshesh, Thomas E. Darcie, Reuven Gordon, Vahid Bahrami-Yekta, Mahsa Mahtab
Publikováno v:
ACS Photonics. 4:1350-1354
Plasmon-enhanced photoconductive antennas allow for improved performance, particularly in below-band-gap absorption devices using low-temperature-grown GaAs. Here we design the plasmonic nanostructures to act as antireflection coatings as well, achie
Autor:
Peng, Wu, Thomas, Tiedje
Publikováno v:
Journal of visualized experiments : JoVE. (147)
This article describes a procedure for growing Mg3N2 and Zn3N2 films by plasma-assisted molecular beam epitaxy (MBE). The films are grown on 100 oriented MgO substrates with N2 gas as the nitrogen source. The method for preparing the substrates and t
Autor:
Thomas Tiedje, Peng Wu
Publikováno v:
Journal of Visualized Experiments.
This article describes a procedure for growing Mg3N2 and Zn3N2 films by plasma-assisted molecular beam epitaxy (MBE). The films are grown on 100 oriented MgO substrates with N2 gas as the nitrogen source. The method for preparing the substrates and t
Autor:
Vahid Bahrami-Yekta, Mahsa Mahtab, Ryan B. Lewis, Thomas Tiedje, Stephan W. Koch, Ron Synowicki, Lars C. Bannow
Publikováno v:
Physical Review Materials. 3