Abstract
We demonstrate production of high-quality Cu(InGa)(SSe)2 (CIGSSe) films by high-rate supersonic spray deposition. This technique is unique in creating particle-based films without introducing impurities, because no additives or binders are used. The thin film deposition process was investigated computationally, to understand the pulverization of the incoming particles. These simulations were consistent with experimental observations. Grain growth was improved by adding a 300-nm copper layer atop the CIGSSe film; selenization of the resulting bilayer produced a CuSe liquid flux that assisted the sintering process. The final CIGSSe film-based solar cell had a conversion efficiency of 5.49% with Jsc = 18.73 mA/cm2, Voc = 0.488 V, and FF = 59.99% in an active area of 0.44 cm2.
Original language | English |
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Pages (from-to) | 44-54 |
Number of pages | 11 |
Journal | Acta Materialia |
Volume | 123 |
DOIs | |
Publication status | Published - 2017 Jan 15 |
Keywords
- CIGS film
- CIGS nanoparticle
- Impact bonding
- Kinetic spray
- Supersonic flow
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys