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Perovskite/Colloidal Quantum Dot Tandem Solar Cells: Theoretical Modeling and Monolithic Structure
Univ Cambridge, England.
Univ Cambridge, England; ASTAR, Singapore.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering. Univ Oxford, England.
AMOLF, Netherlands.
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2018 (English)In: ACS ENERGY LETTERS, ISSN 2380-8195, Vol. 3, no 4, p. 869-874Article in journal (Refereed) Published
Abstract [en]

Metal-halide perovskite-based tandem solar cells show great promise for overcoming the Shockley-Queisser single-junction efficiency limit via low-cost tandem structures, but so far, they employ conventional bottom-cell materials that require stringent processing conditions. Meanwhile, difficulty in achieving low-bandgap (amp;lt;1.1 eV) perovskites limits all-perovskite tandem cell development. Here we propose a tandem cell design based on a halide perovskite top cell and a chalcogenide colloidal quantum dot (CQD) bottom cell, where both materials provide bandgap tunability and solution processability. A theoretical efficiency of 43% is calculated for tandem-cell bandgap combinations of 1.55 (perovskite) and 1.0 eV (CQDs) under 1-sun illumination. We highlight that intersubcell radiative coupling contributes significantly (amp;gt;11% absolute gain) to the ultimate efficiency via photon recycling. We report an initial experimental demonstration of a solution-processed monolithic perovskite/CQD tandem solar cell, showing evidence for subcell voltage addition. We model that a power conversion efficiency of 29.7% is possible by combining state-of-the-art perovskite and CQD solar cells.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2018. Vol. 3, no 4, p. 869-874
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URN: urn:nbn:se:liu:diva-147807DOI: 10.1021/acsenergylett.8b00207ISI: 000430369600017OAI: oai:DiVA.org:liu-147807DiVA, id: diva2:1205631
Note

Funding Agencies|Cambridge Nehru Bursary; Cambridge Bombay Society Fund; Trinity-Henry Barlow Scholarship; Haidar Scholarship; Rana Denim Pvt. Ltd.; Agency of Science, Technology and Research (A*STAR) Singapore; Engineering and Physical Science Research Council (EPSRC) [EP/M005143/1, EP/P02484X/1]; St Johns College, Cambridge

Available from: 2018-05-14 Created: 2018-05-14 Last updated: 2018-05-14

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CiteExportLink to record
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