Re: [Wien] Fwd: Fwd: Band Edge position

2019-12-22 Thread Subhasis Panda
Thank you very much Prof. Gavin Abo & Prof. Peter Blaha. I'll check those references. Regards Subhasis On Sat, 21 Dec 2019, 13:55 Gavin Abo, wrote: > You might have a look at Eqn (6) in [1]. It looks like that is used as > the E_CB equation in [2]. Look in [3] how pHzpc - pH = 0 in Eqn (1) >

Re: [Wien] Fwd: Fwd: Band Edge position

2019-12-21 Thread Peter Blaha
For ab inito calculations check out eg: https://doi.org/10.1021/jp508880y Am 21.12.2019 um 09:25 schrieb Gavin Abo: You might have a look at Eqn (6) in [1].  It looks like that is used as the E_CB equation in [2].  Look in [3] how pHzpc - pH = 0 in Eqn (1) simplifies to Eqn (2). There are

Re: [Wien] Fwd: Fwd: Band Edge position

2019-12-21 Thread Gavin Abo
You might have a look at Eqn (6) in [1].  It looks like that is used as the E_CB equation in [2].  Look in [3] how pHzpc - pH = 0 in Eqn (1) simplifies to Eqn (2). There are three methods to determine band edge positions.  Second method of first principle has large discrepancies between

Re: [Wien] Fwd: Fwd: Band Edge position

2019-12-21 Thread Peter Blaha
As far as I can see from a short browse, these methods are not "ab initio". How would you calculate an "absolute electronegativity" from a DFT calculation ??? I don't even know what this combined phrase means. PS: A surface slab calculation shouldn't be too expensive Am 20.12.2019 um

[Wien] Fwd: Fwd: Band Edge position

2019-12-20 Thread Subhasis Panda
--- Dear Experts, I wanted to calculate the absolute band edge energies for RbPbI_3 compound only (not any interface like RbPbI3 and TiO2 interface) in the orthorhombic phase. As already suggested, it's a computationally costly work and we don't have enough computational facility also in our