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Title: | High voltage vacuum-deposited CH3NH3PbI3-CH3NH3PbI3 tandem solar cells | Authors: | Avila, Jorge Momblona, Cristina Boix, Pablo Sessolo, Michele Anaya, Miguel Lozano, Gabriel VANDEWAL, Koen Miguez, Hernan Bolink, Henk J. |
Issue Date: | 2018 | Publisher: | ROYAL SOC CHEMISTRY | Source: | ENERGY & ENVIRONMENTAL SCIENCE, 11(11), p. 3292-3297 | Abstract: | The recent success of perovskite solar cells is based on two solid pillars: the rapid progress of their power conversion efficiency and their flexibility in terms of optoelectrical properties and processing methods. That versatility makes these devices ideal candidates for multi-junction photovoltaics. We report an optically optimized double junction CH3NH3PbI3-CH3NH3PbI3 tandem solar cell where the matched short-circuit current is maximized while parasitic absorption is minimized. The use of an additive vacuum-deposition protocol allows us to reproduce calculated stack designs, which comprise several charge selective materials that ensure appropriate band alignment and charge recombination. This rationalized configuration yields an unprecedented open circuit voltage of 2.30 V. Furthermore, this tandem solar cell features efficiencies larger than 18%, higher than those of the individual sub-cells. Low photo-current values allow reducing the losses associated to the series resistance of transparent contacts, which opens the door to the realization of efficient large area modules. | Notes: | [Avila, Jorge; Momblona, Cristina; Boix, Pablo; Sessolo, Michele; Bolink, Henk J.] Univ Valencia, Inst Ciencia Mol, C J Beltran 2, Paterna 46980, Spain. [Anaya, Miguel; Lozano, Gabriel; Miguez, Hernan] Univ Seville, Spanish Natl Res Council, Inst Mat Sci Seville, C Americo Vespucio 49, Seville 41092, Spain. [Vandewal, Koen] Univ Hasselt, Inst Mat Res IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | Document URI: | http://hdl.handle.net/1942/28781 | ISSN: | 1754-5692 | e-ISSN: | 1754-5706 | DOI: | 10.1039/c8ee01936c | ISI #: | 000449843300017 | Rights: | The Royal Society of Chemistry 2018 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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avila 1.pdf Restricted Access | Published version | 1.92 MB | Adobe PDF | View/Open Request a copy |
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