Ali Bahrami

11 Questions 5 Answers 0 Followers

Questions related from Ali Bahrami

Microfluidic flow rate in separation methods with external force fields and fluid dynamics-based microfulidic separation methods?

Hello everyone. I have a question about microfluidic-based methods. In this article, "Microflidic-Based Approaches in Targeted Cell/ParticleSeparation Based on Physical Properties: Fundamentalsand...

16 October 2020 9,315 5 View

Group velocity inside photonic crystals with defects?

How to calculate group velocity inside photonic crystals with defects (for example inside waveguide region of the figure below)? I know that in PhCs without defects, we can extract group velocity...

28 March 2018 5,688 5 View

Why current is constant during storage phase in reverse recovery experiment?

I have attached a simple schematic of this experiment. As you can see, there is a constant current phase in the curve known as storage phase. My question is, why current is constant during storage...

29 August 2017 8,475 5 View

Large area photodetectors?

Why some photodetectors (specifically Si pin PDs) have large areas? and how this large area affects on the figure of merits of a photodetector?Excuse me if the question is and general. I could not...

09 July 2017 5,773 6 View

How can I extract maximum real index of refraction in Silvaco?

I have simulated real index of refraction as a function of energy for a waveguide. How can I obtain maximum real index of refraction using "extract" statement? I have examined some statements such...

11 December 2015 5,302 2 View

Why do inverted organic solar cells are more stable compared to normal OSCs?

I know that one reason is using high work function electrodes. Is there any other reason for better stability of inverted organic solar cells?

27 October 2015 2,331 1 View

Why is the Jsc of tandem solar cells are typically lower than Jsc of the subcell that produces lower current?

I have read several papers about (organic) tandem solar cells, in some papers Jsc of tandem cell is almost equal to Jsc of the subcell that produces lower current and in some of papers Jsc of the...

02 October 2015 8,311 5 View

What are the advantages and disadvantages of using electron and hole transport layers in organic solar cells?

what is the advantages and disadvantages of using electron and hole transport layers in organic solar cells?

12 July 2015 7,804 7 View

Convergence problem in using pasveer mobility model for simulation of an organic solar cell in silvaco?

I am trying to simulate an OSC including Extended GaussianDisorder Model (or equivalently pasveer mobility model) in silvaco, but the solution doesn't converge (it had this warnings and errors:...

02 July 2015 5,881 4 View

How can I simulate an organic solar cell at open circuit voltage in silvaco?

I want to simulate an organic solar cell at open circuit voltage in silvaco (and with a large surface recombination). I have tried to do it by inserting a large resistance (RESIST=1e20) at...

21 June 2015 140 1 View

How can we include recombination via CT states in organic solar cell modelling in silvaco?

How can we include Recombination via CT states in organic solar cell modelling in silvaco?

05 June 2015 7,022 1 View