12 Questions 41 Answers 0 Followers
Questions related from Amirhossein Ghods
Hello, I have been working on Au/n-GaAs (Si doped) Schottky junctions. It is very well know that dark reverse saturation current (J0) is primarily dependent on temperature and nothing else (in...
05 May 2018 7,784 5 View
The punch through mechanism is described as reverse bias applied to drain, which results into extended depletion region. The two depletion regions of drain and source therefore are intersectioned...
05 May 2018 2,268 14 View
I have been trying to deposit Ni using ebeam evaporation. I initially used to use graphite crucible for deposition purposes. However, there were few occasions where the cryopump has shut down even...
03 March 2018 8,325 11 View
Hello, I have a single junction Schottly solar cells (junction of thin film metal and semiconductor substrate) as can be seen in attached picture. There are two metal-semicondcutor junctions: 1-...
01 January 2018 6,941 3 View
Hi i am am trying to etch down NI layer with thickness of 100nm on nGaAs substrate. I have read reference articles mainly the handbook of metal enchants and tried using following...
01 January 2018 8,943 5 View
I have fabricated a Schottky junction (100nm Au on nGaAs substrate with Ohmic contact of AuGe(100nm)/Ni(30nm)/Au(50nm) on nGaAs) using ebeam evaporation...When I perform I-V measurements, there...
11 November 2017 3,945 12 View
Hi, I have deposited 100nm Au on 5nm Au using e-beam evaporation and conventional photo-lithography techniques. I used ~5nm Ni as an adhesion layer for 100nm Au, so basically the structure is Au...
11 November 2017 5,159 6 View
Why depletion region (i.e. built-in potential) in Schottky contact is smaller than the pn junction? In other words, why Voc of Schottky contact is smaller than the pn junction? Does it have any...
01 January 2017 439 4 View
In a Schottky solar cell, consider using an opaque metal on top of the bulk of semiconductor. Depletion region exists mostly between the metal and semiconductor, and due to the opaque metal,...
01 January 2017 6,785 2 View
Hi, I have been trying to measure EQE of silicon solar cells manufactured in our lab. Supposedly, the EQE should be "zero" after the bandgap wavelength (~1100 nm). Apparently, this is not the case...
10 October 2016 9,163 9 View
I am wondering if i have a GaAs solar cell and a Si solar cell, what would be the best combination to achieve the max power: have a two modules of series connected silicon (gaas) cells together,...
09 September 2016 227 4 View
As everyone knows the goal when constructing a photovoltaic cell is to maximize the power conversion efficiency (PCE). This is done through maximizing Voc and Jsc. I was just reading a paper that...
07 July 2016 6,926 6 View
