Projects per year
Abstract
Cu2ZnSnSe4 thin films, fabricated on bare or molybdenum coated glass substrates by magnetron sputtering and selenisation, were studied by a range of techniques. Photoluminescence spectra reveal an excitonic peak and two phonon replicas of a donor-acceptor pair (DAP) recombination. Its acceptor and donor ionisation energies are 27 and 7 meV, respectively. This demonstrates that high-quality Cu2ZnSnSe4 thin films can be fabricated. An experimental value for the longitudinal optical phonon energy of 28 meV was estimated. The band gap energy of 1.01 eV at room temperature was determined using optical absorption spectra.
Original language | English |
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Article number | 062104 |
Pages (from-to) | - |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 6 |
DOIs | |
Publication status | Published - 8 Aug 2011 |
Keywords
- photoluminescence
- selenisation
- dependence
- energy
- copper compounds
- excitons
- phonons
- photoionisation
- Raman spectra
- semiconductor thin films
- sputter deposition
- tin compounds
- zinc compounds
- TIC - Bionanotechnology
Projects
- 1 Finished
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Magnetic Field - and Pressure - Optical Effects In CULNSE2 And CULNS2
Martin, R. & Yakushev, M. V.
EPSRC (Engineering and Physical Sciences Research Council)
23/09/07 → 22/01/11
Project: Research