Excitonic Transition Energy Renormalization in Lead Diiodide Nanofilm Caused by Self-Polarization Effects and Electron-Phonon Interaction

Authors O.V. Pugantseva , V.M. Kramar

Yuriy Fed’kovych Chernivtsi National University, 2, Kotsiubynskogo Str., 58012 Chernivtsi, Ukraine

Issue Volume 5, Year 2013, Number 3
Dates Received 25 June 2013; revised manuscript received 14 October 2013; published online 17 October 2013
Citation O.V. Pugantseva, V.M. Kramar, J. Nano- Electron. Phys. 5 No 3, 03036 (2013)
PACS Number(s) 73.21.Fg
Keywords Nanoheterostructure (2) , Quantum well (6) , Exciton (5) , Lead diiodide.
Annotation Results of the theoretical study of the contributions of self-polarization effect and exciton-phonon interaction to the exciton transition energy in a flat semiconductor nanofilm are presented here. Calculations of the binding and exciton ground state energies are performed using 2H-PbI2 nanofilm embedded in ethylene-methacrylic acid (E-MAA) copolymer. It has been revealed that in ultrathin nanofilms the self-pola-rization effect contribution to the exciton energy is more than from the interaction with polarizing optical phonons.

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