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3 protocols using molybdenum vi oxide

1

Synthetic Polymers for High-Performance Devices

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We strictly controlled both molar ratio of BDT-di-tin and FBTA, as well as reaction time to synthesize four polymer J51 with different Mn.
All J51 polymers (J51-8kDa, J51-16kDa, J51-21kDa and J51-36kDa) were synthesized via Stille coupling reaction as showed in synthesis part. ITO-coated glass substrates with specification of 12 × 12 mm2 were used for devices. Zinc acetate dihydrate (Zn(CH3COO)2·2H2O, ≥99.5%), 2-methoxyethanol (99.8%, anhydrous) and molybdenum(vi) oxide (99.98%, trace metals basis) were obtained from Sigma-Aldrich. Ethanolamine (98%) was purchased from Sigma-Aldrich. Silver (99.99%) was obtained from Zhongnuo. Chloroform was obtained by distillations with calcium chloride to dry in advance. Building block 4,7-bis(5-bromothiophen-2-yl)-2-(2-butyloctyl)-5,6-difluoro-2H-benzo[d][1,2,3]triazole (FBTA) and BDT di-tin monomer were synthesized according to literature. Except for J51 with different Mns and chloroform, all the other chemicals were used as received without further purification.
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2

Perovskite Solar Cell Synthesis

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Oleic acid (OA, analytical reagent), oleylamine
(OAm, technical grade 80–90%), and 1-octadecene (ODE, technical
grade 90%) were purchased from Aladdin Bio-Chem Technology Corp. Cesium
acetate (CsAc, 99.99%) and τitanium(IV) isopropoxide (TIPP,
99.999% trace metals bases), octane (anhydrous, ≥99%), methyl
acetate (MeOAc, anhydrous 99.5%), 4-tert-butylpyridine
(tBP, 96%), chlorobenzene (anhydrous, 99.8%), acetonitrile (anhydrous,
99.8%), molybdenum(VI) oxide (MoOx, 99.97% trace metals basis), bis(trifluoromethane)
sulfonimide lithium salt (Li-TFSI, 99.95% trace metals basis), and
FK 102 Co(III) TFSI Salt (98%) were purchased from Sigma-Aldrich.
Lead(II) iodide (PbI2, 99.99%) was purchased from Xi’an
Polymer Light Technology Corp. Hexane (GR grade 95%) was purchased
from DUKSAN. Spiro-OMeTAD was purchased from YingKou YouXuan Technology
Corp. HCl (37%) HNO3 (68%), and EtOH were purchased from
RCL Labscan Limited. All of the chemicals were used without further
purification.
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3

Fabrication of Organic Solar Cell Device

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PM6 (poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)thiophen-2-yl)-benzo[1,2-b:4,5-b′]dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′]dithiophene-4,8-dione))])
was purchased from 1-Material. The 20 mm × 15 mm pre-patterned
ITO glass (∼20 Ω/□) and DTY6 (2,2′-((2Z,2′Z)-((12,13-bis(2-decylteradecyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2″,3″:4′,5′]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile) were purchased
from Ossila. All solvents and remaining materials, including molybdenum(VI)
oxide (99.97% trace metals basis), were purchased from Sigma-Aldrich,
unless otherwise stated.
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