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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201702140
|2 doi
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|a pubmed24n0912.xml
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|a (DE-627)NLM273690973
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|a (NLM)28692764
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Rajagopal, Adharsh
|e verfasserin
|4 aut
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|a Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage
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|c 2017
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Organic-inorganic hybrid perovskite multijunction solar cells have immense potential to realize power conversion efficiencies (PCEs) beyond the Shockley-Queisser limit of single-junction solar cells; however, they are limited by large nonideal photovoltage loss (V oc,loss ) in small- and large-bandgap subcells. Here, an integrated approach is utilized to improve the V oc of subcells with optimized bandgaps and fabricate perovskite-perovskite tandem solar cells with small V oc,loss . A fullerene variant, Indene-C60 bis-adduct, is used to achieve optimized interfacial contact in a small-bandgap (≈1.2 eV) subcell, which facilitates higher quasi-Fermi level splitting, reduces nonradiative recombination, alleviates hysteresis instabilities, and improves V oc to 0.84 V. Compositional engineering of large-bandgap (≈1.8 eV) perovskite is employed to realize a subcell with a transparent top electrode and photostabilized V oc of 1.22 V. The resultant monolithic perovskite-perovskite tandem solar cell shows a high V oc of 1.98 V (approaching 80% of the theoretical limit) and a stabilized PCE of 18.5%. The significantly minimized nonideal V oc,loss is better than state-of-the-art silicon-perovskite tandem solar cells, which highlights the prospects of using perovskite-perovskite tandems for solar-energy generation. It also unlocks opportunities for solar water splitting using hybrid perovskites with solar-to-hydrogen efficiencies beyond 15%
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|a Journal Article
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|a hysteresis and photostability
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|a monolithic tandem
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|a open-circuit voltage
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|a optical simulations
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|a solar water splitting
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|a Yang, Zhibin
|e verfasserin
|4 aut
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|a Jo, Sae Byeok
|e verfasserin
|4 aut
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1 |
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|a Braly, Ian L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liang, Po-Wei
|e verfasserin
|4 aut
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1 |
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|a Hillhouse, Hugh W
|e verfasserin
|4 aut
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|a Jen, Alex K-Y
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 34 vom: 01. Sept.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:34
|g day:01
|g month:09
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|u http://dx.doi.org/10.1002/adma.201702140
|3 Volltext
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