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Joel, Jonathan
Publications (4 of 4) Show all publications
Edoff, M., Joel, J., Vermang, B. & Hägglund, C. (2016). Back Contact Passivation Effects in Bi-Facial Thin CIGS Solar Cells. In: 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC): . Paper presented at 43rd IEEE Photovoltaic Specialists Conference (PVSC), JUN 05-10, 2016, Portland, OR (pp. 3527-3529). IEEE
Open this publication in new window or tab >>Back Contact Passivation Effects in Bi-Facial Thin CIGS Solar Cells
2016 (English)In: 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), IEEE , 2016, p. 3527-3529Conference paper, Published paper (Refereed)
Abstract [en]

Bi-facial solar cells with ultrathin CIGS solar cells are fabricated to investigate the influence of back contact passivation. Solar cells with CIGS thicknesses of 300 and 500 nm and with an ultrathin transparent Mo layer are characterized using EQE measurements from both the front and the rear side as well as with I-V measurements. Back contact passivation consisting of Al2O3 deposited by atomic layer deposition and nano-sized point contact openings is used. The results are compared to cells with only the transparent Mo layer as back contact. We find a significant effect of the passivation manifested as an increase in the current density of the solar cells with the passivation.

Place, publisher, year, edition, pages
IEEE, 2016
Series
IEEE Photovoltaic Specialists Conference, ISSN 0160-8371 ; 43
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-331390 (URN)10.1109/PVSC.2016.7750326 (DOI)000399818703117 ()978-1-5090-2724-8 (ISBN)
Conference
43rd IEEE Photovoltaic Specialists Conference (PVSC), JUN 05-10, 2016, Portland, OR
Funder
Swedish Research CouncilSwedish Energy Agency
Available from: 2017-10-13 Created: 2017-10-13 Last updated: 2018-04-04Bibliographically approved
Joel, J., Vermang, B., Larsen, J., Donzel-Gargand, O. & Edoff, M. (2015). On the assessment of CIGS surface passivation by photoluminescence. Physica Status Solidi. Rapid Research Letters, 9(5), 288-292
Open this publication in new window or tab >>On the assessment of CIGS surface passivation by photoluminescence
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2015 (English)In: Physica Status Solidi. Rapid Research Letters, ISSN 1862-6254, E-ISSN 1862-6270, Vol. 9, no 5, p. 288-292Article in journal (Refereed) Published
Abstract [en]

An optimized test structure to study rear surface passivation in Cu(In,Ga)Se-2 (CIGS) solar cells by means of photoluminescence (PL) is developed and tested. The structure - illustrated in the abstract figure - is examined from the rear side. To enable such rear PL assessment, a semi-transparent ultrathin Mo layer has been developed and integrated in place of the normal rear contact. The main advantages of this approach are (i) a simplified representation of a rear surface passivated CIGS solar cell is possible, (ii) it is possible to assess PL responses originating close to the probed rear surface, and (iii) a stable PL response as a function of air exposure time is obtained. In this work, PL measurements of such structures with and without rear surface passivation layers have been compared, and the measured improvement in PL intensity for the passivated structures is associated with enhanced CIGS rear interface properties. [GRAPHICS] Transmission electron microscope (TEM) bright field cross-section image of the rear illuminated test structure fabricated for PL characterization.

Keywords
solar cells, thin films, CuInGaSe2, surface passivation, photoluminescence
National Category
Environmental Engineering Physical Sciences
Identifiers
urn:nbn:se:uu:diva-256541 (URN)10.1002/pssr.201510081 (DOI)000354888300002 ()
Available from: 2015-06-25 Created: 2015-06-24 Last updated: 2018-08-12Bibliographically approved
Vermang, B., Ren, Y., Joel, J., Frisk, C., Donzel-Gargand, O., Salome, P., . . . Edoff, M. (2015). Rear surface optimization of CZTS solar cells by use of a passivation layer with nano-sized point openings. In: 2015 IEEE 42ND PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC): . Paper presented at IEEE 42nd Photovoltaic Specialist Conference (PVSC), JUN 14-19, 2015, New Orleans, LA.
Open this publication in new window or tab >>Rear surface optimization of CZTS solar cells by use of a passivation layer with nano-sized point openings
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2015 (English)In: 2015 IEEE 42ND PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC), 2015Conference paper, Published paper (Refereed)
Abstract [en]

Previously, an innovative way to reduce rear interface recombination of Cu(In,Ga)(S,Se)(2) (CIGSSe) solar cells has been successfully developed. In this work, this concept is established in Cu-2(Zn,Sn)(S,Se)(4) (CZTSSe) cells, to demonstrate its potential for other thin-film technologies. Therefore, ultra-thin CZTS cells with an Al2O3 rear surface passivation layer having nano-sized point openings are fabricated. The results indicate that introducing such a passivation layer can have a positive impact on open circuit voltage (V-OC; +49%(rel.)) or short circuit current (J(SC); +17%(rel.)), compared to corresponding unpassivated cells. Hence, a promising efficiency improvement of 52%(rel.) is obtained for the rear passivated cells.

Series
IEEE Photovoltaic Specialists Conference, ISSN 0160-8371
Keywords
solar cells, thin-film, Cu(In, Ga)(S, Se)(2), Cu-2(Zn, Sn)(S, Se)(4), surface passivation layer, nano-sized point contacts, aluminum oxide
National Category
Energy Systems
Identifiers
urn:nbn:se:uu:diva-284905 (URN)000369992900034 ()978-1-4799-7944-8 (ISBN)
Conference
IEEE 42nd Photovoltaic Specialist Conference (PVSC), JUN 14-19, 2015, New Orleans, LA
Available from: 2016-04-19 Created: 2016-04-19 Last updated: 2018-06-29Bibliographically approved
Vermang, B., Ren, Y., Donzel-Gargand, O., Frisk, C., Joel, J., Salome, P., . . . Edoff, M. (2015). Rear Surface Optimization of CZTS Solar Cellsby Use of a Passivation Layer WithNanosized Point Openings. IEEE Journal of Photovoltaics
Open this publication in new window or tab >>Rear Surface Optimization of CZTS Solar Cellsby Use of a Passivation Layer WithNanosized Point Openings
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2015 (English)In: IEEE Journal of Photovoltaics, ISSN 2156-3381, E-ISSN 2156-3403Article in journal (Refereed) Published
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-268546 (URN)
Available from: 2015-12-07 Created: 2015-12-07 Last updated: 2017-12-01
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