All Categories (1-20 of 34)

1. Absorption coefficient or absorbance?

   Q&A|Closed | Responses: 0

   After simulating a certain Quantum dot structure, the absorption curve can be shown

   https://nanohub.org/answers/question/2691

2. Question of inputting correct effective masses

   Q&A|Closed | Responses: 1

   In the structure section, when inputting the effective mass, in what units are we supposed to input it? E.g. for Cadmium Selenide would the effective mass be 1.18?

   https://nanohub.org/answers/question/2485

3. How to change the specifications required in the ''Input Deck'' of Quantum Dot Software.

   Q&A|Closed | Responses: 2

   I want to simulate optical properties for different material other than GaAs for various geometries. However, I am unable to change the specifications...

   https://nanohub.org/answers/question/2410

4. what should be the format of input file for importing the new quantum dot?

   Q&A|Closed | Responses: 6

   Is the tool is only for GaAs quantum dot? Because when i'm changing the energy band gap, lattice parameter and effective mass of the quantum dot, the input deck show the same GaAs quantum...

   https://nanohub.org/answers/question/2399

5. How can I simulate the absorption coefficient of a spherical core/shell nanostructure (Quantum dot) ?

   Q&A|Closed | Responses: 1

   https://nanohub.org/answers/question/2345

6. Spherical QD

   Q&A|Closed | Responses: 0

   Is there a predefined spherical QD structure available for simulation? If not, how can we define one? Actual structure I'd like to simulate is truncated cuboctahedra and i am...

   https://nanohub.org/answers/question/2187

7. Band Gap value

   Q&A|Closed | Responses: 1

   For the default simple quantum dot, the bulk band gap is given as 1.43 eV (GaAs), and the value of Eg for the quantum dot is given as 0.18 eV.  This is also the energy of the absorption...

   https://nanohub.org/answers/question/1931

8. Where did spheroidal geometry go?

   Q&A|Closed | Responses: 2

   In the introductory material, a spheroid is one of the options for geometry. It appears that this is not longer an option in the current version, is there a reason for that?

   https://nanohub.org/answers/question/1828

9. recommended viewer for vtk files

   Q&A|Closed | Responses: 2

   Hi, I want to analyse simulated quantum dot wave functions off-line using a windows pc. For this, I have downloaded the wave function as a vtk file. Is there a recommeded viewer / tool for this...

   https://nanohub.org/answers/question/1777

10. recommended viewer for vtk files

    Q&A|Closed | Responses: 0

    Hi, I want to analyse simulated quantum dot wave functions off-line using a windows pc. For this, I have downloaded the wave function as a vtk file. Is there a recommeded viewer / tool for this...

    https://nanohub.org/answers/question/1776

11. Confusion with bandgap

    Q&A|Closed | Responses: 0

    The default case shows a bandgap between the ground and the first excited states (less than 1 eV for GaAs!). This is confusing, since by bandgap students usually understand the difference...

    https://nanohub.org/answers/question/1682

12. model of a truncated pyramid QD

    Q&A|Closed | Responses: 2

    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...

    https://nanohub.org/answers/question/1660

13. distinction between hole and electron states is not clear

    Q&A|Closed | Responses: 6

    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?  ...

    https://nanohub.org/answers/question/1482

14. increments on absorption graph

    Q&A|Closed | Responses: 1

    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...

    https://nanohub.org/answers/question/1315

15. Symmetry of p-states changes with the resolution of the mesh

    Q&A|Closed | Responses: 1

    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. ...

    https://nanohub.org/answers/question/1238

16. 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?

    Q&A|Closed | Responses: 1

    Hi there,

    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...

    https://nanohub.org/answers/question/1123

17. 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?

    Q&A|Closed | Responses: 0

    Hi there,

    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...

    https://nanohub.org/answers/question/1122

18. Can I calculate the energies for 2 coupled dots across a thin barrier?

    Q&A|Closed | Responses: 1

    https://nanohub.org/answers/question/888

19. anisotropic effective masses

    Q&A|Closed | Responses: 1

    I want to simulate Bismuth which has anisotropic effective masses… how can I input that?

    https://nanohub.org/answers/question/877

20. How i can determine input for the e dimension for pyramidical or spheroid qdot? what should be the value of Lx,Ly & Lz?

    Q&A|Open | Responses: 1

    https://nanohub.org/answers/question/659