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SnOx Atomic Layer D...
SnOx Atomic Layer Deposition on Bare Perovskite-An Investigation of Initial Growth Dynamics, Interface Chemistry, and Solar Cell Performance
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- Hultqvist, Adam (författare)
- Uppsala universitet,Solcellsteknik
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- Jacobsson, T. Jesper, 1984- (författare)
- Uppsala universitet,Oorganisk kemi,Fysikalisk kemi,Helmholtz Ctr Berlin, Div Renewable Energies, D-14109 Berlin, Germany,Solcellsteknik
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- Svanström, Sebastian (författare)
- Uppsala universitet,Energimaterialens fysik
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- Edoff, Marika, 1965- (författare)
- Uppsala universitet,Solcellsteknik
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- Cappel, Ute B. (författare)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, S-11428 Stockholm, Sweden
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- Rensmo, Håkan (författare)
- Uppsala universitet,Energimaterialens fysik
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- Johansson, Erik M. J. (författare)
- Uppsala universitet,Fysikalisk kemi
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- Boschloo, Gerrit (författare)
- Uppsala universitet,Fysikalisk kemi
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- Torndahl, Tobias (författare)
- Uppsala Univ, Dept Mat Sci, S-75103 Uppsala, Sweden.
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(creator_code:org_t)
- 2021-01-04
- 2021
- Engelska.
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Ingår i: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 4:1, s. 510-522
- Relaterad länk:
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https://doi.org/10.1...
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https://pubs.acs.org...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- High-end organic-inorganic lead halide perovskite semitransparent p-i-n solar cells for tandem applications use a phenyl-C-61-butyric acid methyl ester (PCBM)/atomic layer deposition (ALD)-SnOx electron transport layer stack. Omitting the PCBM would be preferred for manufacturing, but has in previous studies on (FA,MA)Pb(Br,I)(3) and (Cs,FA)Pb(Br,I)(3) and in this study on Cs(0)(.0)(5)FA(0.79)MA(0.16)PbBr(0.51)I(2.49) (perovskite) led to poor solar cell performance because of a bias-dependent light-generated current. A direct ALD-SnOx exposure was therefore suggested to form a nonideal perovskite/SnOx interface that acts as a transport barrier for the light-generated current. To further investigate the interface formation during the initial ALD SnOx growth on the perovskite, the mass dynamics of monitor crystals coated by partial p-i-n solar cell stacks were recorded in situ prior to and during the ALD using a quartz crystal microbalance. Two major finds were made. A mass loss was observed prior to ALD for growth temperatures above 60 degrees C, suggesting the decomposition of the perovskite. In addition, a mostly irreversible mass gain was observed during the first exposure to the Sn precursor tetrakis(dimethylamino)tin(IV) that is independent of growth temperature and that disrupts the mass gain of the following 20-50 ALD cycles. The chemical environments of the buried interface were analyzed by soft and hard X-ray photoelectron spectroscopy for a sample with 50 ALD cycles of SnOx on the perovskite. Although measurements on the perovskite bulk below and the SnOx film above did not show chemical changes, additional chemical states for Pb, Br, and N as well as a decrease in the amount of I were observed in the interfacial region. From the analysis, these states and not the heating of the perovskite were concluded to be the cause of the barrier. This strongly suggests that the detrimental effects can be avoided by controlling the interfacial design.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- perovskite solar cell
- ALD
- in situ QCM
- HAXPES
- interface
- SnOx
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- Av författaren/redakt...
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Hultqvist, Adam
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Jacobsson, T. Je ...
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Svanström, Sebas ...
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Edoff, Marika, 1 ...
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Cappel, Ute B.
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Rensmo, Håkan
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Johansson, Erik ...
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Boschloo, Gerrit
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Torndahl, Tobias
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Fysikalisk kemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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ACS Applied Ener ...
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Kungliga Tekniska Högskolan
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Uppsala universitet