Abstract
Formation of polycrystalline thin film CuInSe2 was achieved by the rapid thermal processing of vacuum-deposited copper, indium, and selenium. Films were fabricated and characterized in three composition regions: copper-poor (approximately 20 at.% Cu). stoichiometric (25 at.% Cu) and copper-rich (approximately 28 at.% Cu). Characterization results including X-ray diffraction analysis, electron probe for microanalysis, scanning electron microscopy, and optical reflection and transmission measurements are presented. The results show that nearly single-phase material has been formed from co-deposited precursors with a post-deposition annealing time of less than 2 min. The films have smooth morphologies amenable for photovoltaic device fabrication, optical absorption coefficients in the high 104 cm-1 range, and an optical band gap of 1.0 eV.
Original language | American English |
---|---|
Pages (from-to) | 69-77 |
Number of pages | 9 |
Journal | Solar Cells |
Volume | 30 |
Issue number | 1-4 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |
Bibliographical note
Work performed by Department of Physics, University of Colorado, Boulder, Colorado, and Solar Energy Research Institute, Golden, ColoradoNREL Publication Number
- ACNR/JA-212-12407