11 Questions 32 Answers 0 Followers
Questions related from Amr Hessein
I want to make modeling and simulation for thin film solar cell and thin film interfaces composed from nano structured materials. But I don't have any experience in that field. So any one can...
12 November 2016 1,264 72 View
I made my counter electrode from nickel sulfide- Graphene composite on FTO substrate by using PVDF as a binder. But when the QDSSCs assembled by using polysulfide electrolyte, the counter...
02 October 2015 5,197 2 View
Can any one suggest the suitable filter paper used in filtering and washing graphene oxide prepared by Hummer's method.
24 May 2015 5,384 5 View
I need to get a light source that simulate the sunlight in order to test my samples. Can I use "400 W metal halide lamp" or " Halogen lamp" is better?
16 April 2015 2,599 15 View
I want to know the typical procedure for preparing (Na2SeSO3), to be used in assembling CdSe by SILAR method.
01 February 2015 4,814 4 View
I need to use Filmetrics F20 (http://www.filmetrics.com/thicknessmeasurement/f20) to measure the thickness of tio2 layer coated on FTO glass used as a working electrode in dye sensitized solar...
27 October 2014 5,251 3 View
I working on developing a counter electrode of sensitized solar cell based on graphene. And I need to perform EIS of these electrodes. In the literature, the authors perform EIS of cells consist...
19 October 2014 8,819 10 View
Alternative to the unstable sodium sulfide + sulfur in water + methanol one?
11 October 2014 8,544 1 View
I need to measure the thin film thickness of mesoporous TiO2 layer using "filmetrics F20 thin film analyzer" but I want to know the refractive index of TiO2 P25
09 September 2014 6,826 4 View
To whom work in quantum dot sensitized solar cell. I prepare polysulfide electrolyte with concentration 1M Na2S and 1M S in distilled water. My problem is after some time I found a green...
24 August 2014 2,913 2 View
The resistance value is variable by changing the current value of the same measured point.
17 March 2014 1,195 7 View