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Title: | Wide band gap kesterite absorbers for thin film solar cells: potential and challenges for their deployment in tandem devices | Authors: | VERMANG, Bart BRAMMERTZ, Guy MEURIS, Marc Schnabel, Thomas Ahlswede, Erik Choubrac, Leo Harel, Sylvie Cardinaud, Christophe Arzel, Ludovic Barreau, Nicolas van Deelen, Joop Bolt, Pieter-Jan Bras, Patrice Ren, Yi Jaremalm, Eric Khelifi, Samira Yang, Sheng Lauwaert, Johan Batuk, Maria Hadermann, Joke Kozina, Xeniya Handick, Evelyn Hartmann, Claudia Gerlach, Dominic Matsuda, Asahiko Ueda, Shigenori Chikyow, Toyohiro Felix, Roberto Zhang, Yufeng Wilks, Regan G. Bär, Marcus |
Issue Date: | 2019 | Publisher: | ROYAL SOC CHEMISTRY | Source: | SUSTAINABLE ENERGY & FUELS, 3(9), p. 2246-2259 | Abstract: | This work reports on developments in the field of wide band gap Cu2ZnXY4 (with X = Sn, Si or Ge, and Y = S, Se) kesterite thin film solar cells. An overview on recent developments and the current understanding of wide band gap kesterite absorber layers, alternative buffer layers, and suitable transparent back contacts is presented. Cu2ZnGe(S,Se)(4) absorbers with absorber band gaps up to 1.7 eV have been successfully developed and integrated into solar cells. Combining a CdS buffer layer prepared by an optimized chemical bath deposition process with a 1.36 eV band gap absorber resulted in a record Cu2ZnGeSe4 cell efficiency of 7.6%, while the highest open-circuit voltage of 730 mV could be obtained for a 1.54 eV band gap absorber and a Zn(O,S) buffer layer. Employing InZnOx or TiO2 protective top layers on SnO2:In transparent back contacts yields 85-90% of the solar cell performance of reference cells (with Mo back contact). These advances show the potential as well as the challenges of wide band gap kesterites for future applications in high-efficiency and low-cost tandem photovoltaic devices. | Notes: | [Vermang, Bart; Brammertz, Guy; Meuris, Marc] IMOMEC Partner Solliance, IMEC Div, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Vermang, Bart; Brammertz, Guy; Meuris, Marc] Hasselt Univ, Partner Solliance, Martelarenlaan 42, B-3500 Hasselt, Belgium. [Vermang, Bart; Brammertz, Guy; Meuris, Marc] EnergyVille, Thorpk 8320, B-3600 Ghent, Belgium. [Schnabel, Thomas; Ahlswede, Erik] ZSW, Meitnerstr 1, D-70563 Stuttgart, Germany. [Choubrac, Leo; Harel, Sylvie; Cardinaud, Christophe; Arzel, Ludovic; Barreau, Nicolas] Univ Nantes, Inst Mat Jean Rouxel IMN, CNRS, 2 Rue Houssiniere, F-44322 Nantes, France. [van Deelen, Joop; Bolt, Pieter-Jan] TNO Partner Solliance, High Tech Campus 21, NL-5656 AE Eindhoven, Netherlands. [Bras, Patrice; Ren, Yi; Jaremalm, Eric] Midsummer AB, Elektronikhojden 6, S-17543 Jarfalla, Sweden. [Khelifi, Samira; Yang, Sheng; Lauwaert, Johan] Univ Ghent, Dept Elect & Informat Syst ELIS, Technol Pk Zwijnaarde 15, B-9052 Ghent, Belgium. [Khelifi, Samira] Univ Ghent, Dept Solid State Sci, Krikslaan 281-S1, B-9000 Ghent, Belgium. [Batuk, Maria; Hadermann, Joke; Kozina, Xeniya] Univ Antwerp, Electron Microscopy Mat Sci EMAT, Groenenborgerlaan 171, B-2020 Antwerp, Belgium. [Handick, Evelyn; Hartmann, Claudia; Felix, Roberto; Zhang, Yufeng; Wilks, Regan G.; Baer, Marcus] Helmholtz Zentrum Berlin Matn & Energie GmbH HZB, Dept Interface Design, Hahn Meitner Pl 1, D-14109 Berlin, Germany. [Gerlach, Dominic; Chikyow, Toyohiro] NIMS, Int Ctr Mat Nanoarchitecton MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan. [Matsuda, Asahiko; Chikyow, Toyohiro] NIMS, Res & Serv Div Mat Data & Integrated Syst MaDIS, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan. [Ueda, Shigenori] NIMS, Synchrotron Xray Stn SPring 8, 1-1-1 Kouto,Sayo Cho, Sayo, Hyogo 6795148, Japan. [Ueda, Shigenori] NIMS, Res Ctr Adv Measurement & Characterizat, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan. [Zhang, Yufeng] Xiamen Univ XMU, Coll Phys Sci & Technol, Xiamen 361005, Fujian, Peoples R China. [Wilks, Regan G.; Baer, Marcus] Helmholtz Zentrum Berlin Mat & Energie GmbH HZB, Energy Mat In Situ Lab Berlin EMIL, Albert Einstein Str 15, D-12489 Berlin, Germany. [Baer, Marcus] Friedrich Alexander Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany. [Baer, Marcus] Helmholtz Inst Erlangen Nurnberg Renewable Energy, D-12489 Berlin, Germany. | Document URI: | http://hdl.handle.net/1942/30000 | ISSN: | 2398-4902 | e-ISSN: | 2398-4902 | DOI: | 10.1039/c9se00266a | ISI #: | 000482057500004 | Rights: | The Royal Society of Chemistry 2019 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2020 |
Appears in Collections: | Research publications |
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