DATE CHANGE: nanoHUB could be intermittently unavailable on 05/06 from 8:00 am – 1:00 pm (EST) for scheduled maintenance. All tool sessions will expire on 05/06 at 8:00 am (EST).
Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
anisotropic effective masses
Closed | Responses: 1
I want to simulate Bismuth which has anisotropic effective masses… how can I input that?
Assumptions used in the QDs simulattions
Open | Responses: 1
Dear author, thank you for providing us this useful software.
Do you mind to tell me the assumptions and some fixed parameters used in the simulations, for example, the background...
Barrier material, energy scale
Do you pretend to make a version of Quantum Dot Lab that enabe us to consider the barrier constitution? (no freestanding) As for example, self assembled http://nanohub.org/answers/question/369
Can I calculate the energies for 2 coupled dots across a thin barrier?
distinction between hole and electron states is not clear
Closed | Responses: 2
I ran a 2 band model in a dome structure with a wetting layer and it appears that I got 8 valence band states but it was NOT clear. How can I just ask for conduction band states? ...
Doing the examples in learning module of Introduction of Quantum Dot Lab, I don’t get the same results for ground and excited states as well as the state vs eigenenergy values as they are...
Follow up to material change quantum dot lab
Open | Responses: 3
Dear Dr Klimeck
Thank you very much for your feedback. We want to simulate a different material from GaAs such...
How can I get the total absorption/absorbance of the whole surface of a quantum dot in a QD solar cell by varying the angles theta and phi?
Closed | Responses: 0
I was doing a research on Quantum Dot in Solar Cell and I thought your software could be very useful for my work. I was intending to vary the size and shape of quantum dots and...
How i can determine input for the e dimension for pyramidical or spheroid qdot? what should be the value of Lx,Ly & Lz?
How to distinct the conducting band and valance band
I am glad to use this tool. I have calculated 7 bands accordingto the default configuration. However, i can not distinct the conducting band and valvance band. Furthermore, i want to know which...
I compared a free electron in a 10nm x 10nm x 10nm closed box with an analytical formula and got a very different result
Closed | Responses: 3
I expect to get 0.011eV for the ground state quantization energy.
The tool gives me 0.040eV.
Is it a problem in my interpretation of the results or the tool is wrong?
increments on absorption graph
Is it possible to change the eV increments of the absorption coefficent data in the output so that if you’re comparing three or four different quantum dots, you can easily graph them on...
material change quantum dot lab
Quantum dot lab uses GaAs as material. I want to simulate a different material such as http://nanohub.org/answers/question/63
model of a truncated pyramid QD
I am trying to simulate an InAs/GaAs QD for band structure. The model of a truncated pyramid is more reality in present researches. Do you have any intention to update the simulator for this...
nanowire absorption spectrum
Open | Responses: 2
can we simulate the optical properties of a nanowire?
Number of Atoms
I was trying to relate the volume size and the number of atoms in the simulation. I picked a 2nm-by-2nm-by-2nm box, but when I checked the Output Log file, it only contains 64 atoms....
Results fail to appear with certain parameters
The Quantum Dot Lab tool failed to give me any result when I used the default inputs with following parameters:
Number of States: 50
Simulation seemed to run,...
Several Questions detailed below.
I love this tool, but I have a few questions…
1. What do the shapes of the wavefunctions mean? Does the surface represent energy levels?
2. Where is the effective mass...
Symmetry of p-states changes with the resolution of the mesh
I am running a pyramidal standard structure (no change from defaults, just chose pyramidal shape). In the simulation result the 2 p-type orbitals are aligned with the diagonal of the pyramid. ...