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Influence of Substrate Temperature and Sulfurization on Sputtered Cu 2 SnGe(S,Se) 3 Thin Films for Solar Cell Application.
- Source :
-
IEEE Transactions on Electron Devices . May2022, Vol. 69 Issue 5, p2488-2493. 6p. - Publication Year :
- 2022
-
Abstract
- This work presents the influence of substrate temperature (${T}_{\text{sub}}$) and post-sulfurization on compositional, structural, electrical, and optical properties of dual-ion beam sputtering (DIBS)-grown Cu2(Sn,Ge)(S,Se)3 (CTGSSe) thin films grown on a soda-lime glass (SLG) substrate using a single target. Post-sulfurization of CTGSSe thin films is carried out in a quartz tube chemical vapor deposition (CVD) system. X-ray diffraction (XRD) analysis reveals that the crystal structure of CTGSSe thin films is preferentially tetragonal with (112) and (204) lattice planes at $2\theta $ values of 27.3° and 47.3°, respectively. Field-emission scanning electron microscopy (SEM) has emphasized that the high ${T}_{\text{sub}}$ growth resulted in a larger grain size of 87 nm and better thin-film morphology. Spectroscopic ellipsometry (SE) analysis shows the bandgap values of 1.46–1.62 eV by varying ${T}_{\text{sub}}$ from room temperature (RT) to 300 °C. Furthermore, the bandgap widens from 1.56 to 1.64 eV in the CTGSSe thin films due to post-sulfurization. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189383
- Volume :
- 69
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Electron Devices
- Publication Type :
- Academic Journal
- Accession number :
- 157582622
- Full Text :
- https://doi.org/10.1109/TED.2022.3159509