NDLI: Effect of the encapsulant temperature on the angular and spectral response of multi-junction solar cells

Content Provider	IEEE Xplore Digital Library
Author	Garcia-Linares, P. Dominguez, C. Voarino, P. Besson, P. Baudrit, M.
Copyright Year	2014
Description	Author affiliation: LCPV, CEA-LITEN, Le Bourget du Lac, France (Garcia-Linares, P.; Dominguez, C.; Voarino, P.; Besson, P.; Baudrit, M.)
Abstract	Multi-junction solar cells (MJSC) operating at working conditions under concentration are subjected to temperatures (T) for which the optical coupling provided by their anti-reflective coatings (ARC) has not been optimized. High temperatures and wide ray angles produced by the concentrator on the optical interface of the cell can significantly modify the ARC performance. This effect is especially pronounced for ARCs adapted to silicone encapsulant because the silicone refractive index (n) is significantly sensitive to temperature, modifying the optimal design thickness and material composition. This effect is magnified for tilted rays whose optical path length through the ARC layer is most modified. In this work, an absolute external quantum efficiency (EQE) characterization system is adapted to perform angular and temperature spectral response analysis, allowing to quantify the impact of the optical mismatch caused by the increase of encapsulant temperature for each of their junctions. The intricacies of this upgraded characterization technique are explored, providing insight on important unexpected measurement variables such as finger orientation with respect to the incident ray bundle. A significant spectral mismatch between junctions due to the change in silicone temperature has been observed, leading to short-circuit current $(I_{SC})$ losses as high as 6% with respect to the design conditions (T=25°C) for rays impinging the cell with tilt angles of 70° and more realistic operation temperatures of 65°C. The losses arise from current mismatch between subcells produced by variations in the optical coupling. Lessons from this analysis may be taken into account by future CPV system designers.
Starting Page	3298
Ending Page	3303
File Size	2772379
Page Count	6
File Format	PDF
e-ISBN	9781479943982
DOI	10.1109/PVSC.2014.6925640
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Junctions Fingers Optical coupling Temperature measurement Temperature sensors Optical sensors Receivers characterization Angular dependence anti-reflective coating multi-junction solar cell optical coupling quantum efficiency refractive index temperature concentrator
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Improved grating monochromator set-up for EQE measurements of multi-junction solar cells

Temperature measurement by multi-fiber optical sensor

REDUCTION OF REFLECTION LOSSES IN SOLAR CELL BY USING TIAL2 AND ZR ANTI REFLECTIVE COATING

Efficiency limits for space multi-junction concentrator solar cells

Design of multi-junction solar cells using PC1D

Multiband Solar Concentrator using Transmissive Dichroic

Performance improvement of triple-junctions GaAs-based solar cell using SiO2-nanopillars/SiO2/TiO2 graded-index anti-reflection coating

Four-junction wafer bonded concentrator solar cells

Quantum efficiency measurement of concentrator photovoltaic modules

Effect of the encapsulant temperature on the angular and spectral response of multi-junction solar cells

Similar Documents

Improved grating monochromator set-up for EQE measurements of multi-junction solar cells

Temperature measurement by multi-fiber optical sensor

REDUCTION OF REFLECTION LOSSES IN SOLAR CELL BY USING TIAL2 AND ZR ANTI REFLECTIVE COATING

Efficiency limits for space multi-junction concentrator solar cells

Design of multi-junction solar cells using PC1D

Multiband Solar Concentrator using Transmissive Dichroic

Performance improvement of triple-junctions GaAs-based solar cell using SiO2-nanopillars/SiO2/TiO2 graded-index anti-reflection coating

Four-junction wafer bonded concentrator solar cells

Quantum efficiency measurement of concentrator photovoltaic modules

Effect of the encapsulant temperature on the angular and spectral response of multi-junction solar cells