Home > Publications database > Optimization of SnO2 electron transport layer for efficient planar perovskite solar cells with very low hysteresis > print

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100 1 _ |a Eliwi, Abed Alrhman
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245 _ _ |a Optimization of SnO2 electron transport layer for efficient planar perovskite solar cells with very low hysteresis
260 _ _ |a Cambridge
|c 2022
|b Royal Society of Chemistry
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520 _ _ |a Nanostructured tin oxide (SnO2) is a very promising electron transport layer (ETL) for perovskite solar cells (PSCs) that allows low-temperature processing in the planar n–i–p architecture. However, minimizing current–voltage (J–V) hysteresis and optimizing charge extraction for PSCs in this architecture remains a challenge. In response to this, we study and optimize different types of single- and bilayer SnO2 ETLs. Detailed characterization of the optoelectronic properties reveals that a bilayer ETL composed of lithium (Li)-doped compact SnO2 (c(Li)-SnO2) at the bottom and potassium-capped SnO2 nanoparticle layers (NP-SnO2) at the top enhances the electron extraction and charge transport properties of PSCs and reduces the degree of ion migration. This results in an improved PCE and a strongly reduced J–V hysteresis for PSCs with a bilayer c(Li)-NP-SnO2 ETL as compared to reference PSCs with a single-layer or undoped bilayer ETL. The champion PSC with c(Li)-NP-SnO2 ETL shows a high stabilized PCE of up to 18.5% compared to 15.7%, 12.5% and 16.3% for PSCs with c-SnO2, c(Li)-SnO2 and c-NP-SnO2 as ETL, respectively.
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700 1 _ |a Malekshahi Byranvand, Mahdi
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700 1 _ |a Fassl, Paul
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700 1 _ |a Khan, Motiur Rahman
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700 1 _ |a Hossain, Ihteaz Muhaimeen
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700 1 _ |a Frericks, Markus
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700 1 _ |a Ternes, Simon
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700 1 _ |a Abzieher, Tobias
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700 1 _ |a Schwenzer, Jonas A.
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700 1 _ |a Mayer, Thomas
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700 1 _ |a Hofmann, Jan P.
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700 1 _ |a Richards, Bryce S.
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700 1 _ |a Lemmer, Uli
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700 1 _ |a Saliba, Michael
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700 1 _ |a Paetzold, Ulrich W.
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773 _ _ |a 10.1039/D1MA00585E
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