Can all-inorganic QLED emit efficiently in the space charge limited current region?

I have fabricated an all-inorganic QLED with FTO/NiO/CdSeZns/ZnO/Al. It has three conduction regions corresponding to Ohmic, Trap limited and space charge limited (SCLC). I expect the device to...

09 October 2017 5,363 4 View

How to convert counts/sec to photon flux or A/W?

08 September 2017 369 4 View

Can any divalent or tetravalent metal cation replace the lead in perovskite material?

What are the possible metal cations that can replace the existing lead in lead halide based perovskite material. There are reports of tin and antimony being studied as replacements. Can any other...

07 August 2016 5,248 5 View

How to measure the work function of a semiconductor?

I want to measure the type and work function of Beta Gallium oxide. Unfortunately I dot not have access to UPS or Kelvin probe set up. Is there an indirect method to measure the work function of...

07 August 2016 4,871 3 View

What could be the reason for a red shift in the PL of CdSe/ZnS core shell nanocrystals mixed with nickel oxide nanoparticles?

01 February 2016 5,976 3 View

Is there a technique to meaure the PL decay time indirectly without the use of time resolved PL measurement?

I want to measure the PL decay time of CdSe/ZnS QDs spin coated on glass and nickel oxide thin film separately. Unfortunately, I do not have access to a time resolved PL system. I'm looking for...

01 February 2016 5,320 3 View

How does one obtain CdSe/ZnS quantum dots in powder form?

I have CdSe/ZnS quantum dots with oleic acid ligand in hexane solvent. As synthesized quantum dots were purified with excess of methanol and acetone in a centrifuge. I wish to isolate the quantum...

08 September 2014 9,692 10 View

How can I deposit aluminum using an electron beam evaporator?

I'm trying to deposit aluminum from a boron nitride crucible using an Ebeam evaporator at a pressure of ~5e-6 torr. When the metal melts, it starts boiling and bursts out globules of molten metal...

07 August 2014 3,167 9 View

What kind of gases can be used in a RIE to etch Indium doped tin oxide (ITO)?

06 July 2014 2,927 3 View

How do you measure the electron affinity of CdSe/ZnS nanocrystals?

I'm interested in measuring the band alignment of colloidal grown CdSe/ZnS nanocrystals. Is there a direct or indirect method to measure that?

06 July 2014 2,135 2 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View