A Sustainable Approach Using Nanocrystals Functionalized Green Alkanes as Efficient Antisolvents to Fabricate High-Quality Perovskite Films

Jingwei Xiu; Bing Han; Han GaoXihan ChenZhenhua ChenShaokuan GongXianchang YanWenming TianXusheng ZhangTian ChenXiyuan FengGuocong ChenDong HeYonghong DengShengye JinPeter Raymond Slaterand Zhubing He

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A Sustainable Approach Using Nanocrystals Functionalized Green Alkanes as Efficient Antisolvents to Fabricate High-Quality Perovskite Films

机译：A Sustainable Approach Using Nanocrystals Functionalized Green Alkanes as Efficient Antisolvents to Fabricate High-Quality Perovskite Films

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To address the toxicity concern of extensively used chlorobenzene (CB) andtoluene antisolvents, it is urgent to explore green and more efficientantisolvents. In this work, a general and highly reproducible methodology ofemploying CsPbI_3 nanocrystals (NCs) functionalized green alkanes withultralow-polarity (Alkane/NCs) as antisolvents to fabricate high-qualityperovskite films is reported. Compared with the CB processed, the perovskitefilms with much improved quality and high-orientation are achieved by theAlkane/NCs approach. NCs in the alkane antisolvents are proven to provideenough heterogeneous nuclei, solving effectively the discontinuous filmproblem encountered from using pure alkanes. Strikingly, the latticeanchoring effect of NCs accounts for the high-orientation growth of theperovskite films as revealed directly by cryo-electron microscopy (cryo-EM).Moreover, the phase segregation that easily occur in the CB processedperovskite film is successfully suppressed by the Alkane/NCs method. Theoptimal device conversion efficiency is enhanced from 21.59 to 23.10from CB to octane (OCT)/NCs. Impressively, the alkane/NCs processedperovskite films and their devices exhibit much improved stability over CB,with the conversion efficiency remaining at 94 of its initial value after 500 hlight soaking for OCT/NCs device, while the CB device fails at around 100 h.

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《Advanced energy materials》 |2023年第28期|2300566.1-2300566.10|共10页
作者
Jingwei Xiu; Bing Han; Han GaoXihan ChenZhenhua ChenShaokuan GongXianchang YanWenming TianXusheng ZhangTian ChenXiyuan FengGuocong ChenDong HeYonghong DengShengye JinPeter Raymond Slaterand Zhubing He;
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Department of Materials Science and EngineeringShenzhen Key Laboratory of Full Spectral Solar Electricity Generation(FSSEG)Southern University of Science and TechnologyNo. 1088, Xueyuan Rd., Shenzhen, Guangdong 518055, China;

School of ChemistryUniversity;

Department of Nano EngineeringUniversity of California San DiegoLa Jolla, CA 92093, USA;

Department of Materials Science and EngineeringShenzhen Key Laboratory of Full Spectral Solar Electricity Generation(FSSEG)Southern University of Science and TechnologyNo. 1088, Xueyuan Rd., Shenzhen, Guangdong 518055, ChinaSUSTech Energy Institute for Carbon NeutralityDepartment of Mechanical and Energy EngineeringSouthern University of Science and TechnologyNo. 1088, Xueyuan Rd., Shenzhen, Guangdong 518055, ChinaShanghai Synchrotron FacilityShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204, ChinaState Key Laboratory of Molecular Reaction Dynamics and DynamicsResearch Center for Energy and Environmental MaterialsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023, ChinaDepartment of Materials Science and EngineeringShenzhen Key Laboratory of Full Spectral Solar Electricity Generation(FSSEG)Southern University of Science and TechnologyNo. 1088, Xueyuan Rd., Shenzhen, Guangdong 518055, China,School of ChemistryUniversity School of ChemistryUniversity of BirminghamBirmingham B15 2TT, UKDepartment of Materials Science and EngineeringShenzhen Key Laboratory of Full Spectral Solar Electricity Generation(FSSEG)Southern University of Science and TechnologyNo. 1088, Xueyuan Rd., Shenzhen, Guangdong 518055, China,Institute of Innovative Materi;

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antisolvents; solar cells; nanocrystals; sustainability;

A Sustainable Approach Using Nanocrystals Functionalized Green Alkanes as Efficient Antisolvents to Fabricate High-Quality Perovskite Films

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