A novel non-destructive characterization method to investigate hot-spot formation in CIGS solar cells using lock-in thermography

Autor:	Suheir Nofal, Bart E. Pieters
Rok vydání:	2021
Předmět:	Materials science business.industry fungi Photovoltaic system food and beverages Hot spot (veterinary medicine) Feedback loop Copper indium gallium selenide solar cells Characterization (materials science) law.invention law Solar cell Thermography Optoelectronics business Positive feedback
Zdroj:	2021 IEEE 48th Photovoltaic Specialists Conference (PVSC).
DOI:	10.1109/pvsc43889.2021.9518804
Popis:	This paper introduces a novel non-destructive characterization method to investigate reverse bias hot-spot formation in Cu(In,Ga)Se2 (CIGS) solar cell technologies based on lock-in thermography (LIT). CIGS solar cells technology is an innovative thin-film technology that is well known for its high efficiency. It is well known that partial shading can degrade module performance in CIGS and other thin-film technologies. Partial shading can lead to a reverse bias over cell which in turn leads to the formation of small hot-spots. Recent studies demonstrate that a positive feedback effect involving the high positive thermal coefficient of junction breakdown can play an important role in the formation of these hot spots. The LIT based method we present here allows the quantification of this positive feedback effect. This will allow a more detailed study of reverse bias hot-spot formation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7fdd3c1f6f824f26b5a7cf7065e2a0b6 https://doi.org/10.1109/pvsc43889.2021.9518804 Zobrazit plný text záznamu