Author Topic: photocurrent  (Read 410 times)

0 Members and 1 Guest are viewing this topic.

Offline karma

  • Regular ATK user
  • **
  • Posts: 14
  • Country: in
  • Reputation: 0
    • View Profile
photocurrent
« on: January 9, 2018, 20:21 »
how do we test the convergence for photocurrent calculation.
also is the bias volatge applied  to the left and right electrodes in the device calculator setting applicable during photocurrent analysis

Offline Wang Jin

  • Regular ATK user
  • **
  • Posts: 49
  • Country: cn
  • Reputation: 0
    • View Profile
Dear all,
    1.  How to calculate current density as a function of bias voltage more easily? [PHYS. REV. APPLIED 10, 014026 (2018)]
   2.  How to calculate the transmission as a function of energy for the given photon? [Nano Letters 2018 18 (11), 7275-7281 ]

Thank you very much for your help.

Offline Tue Gunst

  • New ATK user
  • *
  • Posts: 2
  • Country: dk
  • Reputation: 0
    • View Profile
Re: photocurrent
« Reply #2 on: June 4, 2019, 10:53 »
Convergence checks should be performed for the usual DFT settings.
When a good DFT simulation has been performed the kpoints and energies/energy_resolution used in the Photocurrent calculation should be checked.

A bias voltage is included in the usual way through the device calculator. Then one perform the calculation of the Photocurrent for each separate and converged device configuration at a given bias voltage.

The Photocurrent object has a query function "photocurrent.photonMediatedTransmission(photon_mode,...)" that can be used to obtain the transmissions as a function of energy for a selected photon energy index "photon_mode".
Please see the reference manual entry for Photocurrent for full description of the inputs to this query function:
https://docs.quantumwise.com/manual/Types/Photocurrent/Photocurrent.html#photocurrent-c