High performance anti-reflection coatings for broadband multi-junction solar cells
The success of bandgap engineering has made high efficiency broadband multi-junction solar cells possible with photo-response out to the band edge of Ge. Modeling has been conducted which suggests that current double layer anti-reflection coating technology is not adequate for these devices in certain cases. Approaches for the development of higher performance anti-reflection coatings are examined. A new AR coating structure based on the use of Herpin equivalent layers is presented. Optical modeling suggests a decrease in the solar weighted reflectance of over 2.5{percent} absolute as a result. This structure requires no additional optical material development and characterization because no new optical materials are necessary. Experimental results and a sensitivity analysis are presented.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 751469
- Report Number(s):
- SAND2000-0491J; TRN: AH200018%%224
- Journal Information:
- Solar Energy Materials and Solar Cells, Other Information: Submitted to Solar Energy Materials and Solar Cells; PBD: 23 Feb 2000
- Country of Publication:
- United States
- Language:
- English
Similar Records
Broadband anti-reflective coatings for cosmic microwave background experiments
Broadband anti-reflective and water-repellent coatings on glass substrates for self-cleaning photovoltaic cells