Direct optical patterning of perovskite nanocrystals with ligand cross-linkers

Dan Liu; Kangkang Weng; Shaoyong Lu; Fu Li; Hannikezi Abudukeremu; Lipeng Zhang; Yuchen Yang; Junyang Hou; Hengwei Qiu; Zhong Fu; Xiyu Luo; Lian Duan; Youyu Zhang; Hao Zhang; Jinghong Li

doi:10.1126/sciadv.abm8433

Direct optical patterning of perovskite nanocrystals with ligand cross-linkers

Sci Adv. 2022 Mar 18;8(11):eabm8433. doi: 10.1126/sciadv.abm8433. Epub 2022 Mar 16.

Authors

Dan Liu^{1

2

3}, Kangkang Weng^{2

3}, Shaoyong Lu², Fu Li², Hannikezi Abudukeremu², Lipeng Zhang^{2

3}, Yuchen Yang^{2

3}, Junyang Hou², Hengwei Qiu², Zhong Fu², Xiyu Luo^{2

4}, Lian Duan^{2

4}, Youyu Zhang¹, Hao Zhang^{2

3}, Jinghong Li^{2

3}

Affiliations

¹ Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
² Department of Chemistry, Tsinghua University, Beijing 100084, China.
³ Center for BioAnalytical Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Tsinghua University, Beijing 100084, China.
⁴ Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University, Beijing 100084, China.

Abstract

Precise microscale patterning is a prerequisite to incorporate the emerging colloidal metal halide perovskite nanocrystals into advanced, integrated optoelectronic platforms for widespread technological applications. Current patterning methods suffer from some combination of limitations in patterning quality, versatility, and compatibility with the workflows of device fabrication. This work introduces the direct optical patterning of perovskite nanocrystals with ligand cross-linkers or DOPPLCER. The underlying, nonspecific cross-linking chemistry involved in DOPPLCER supports high-resolution, multicolored patterning of a broad scope of perovskite nanocrystals with their native ligands. Patterned nanocrystal films show photoluminescence (after postpatterning surface treatment), electroluminescence, and photoconductivity on par with those of conventional nonpatterned films. Prototype, pixelated light-emitting diodes show peak external quantum efficiency of 6.8% and luminance over 20,000 cd m^-2. Both are among the highest for patterned perovskite nanocrystal devices. These results create new possibilities in the system-level integration of perovskite nanomaterials and advance their applications in various optoelectronic and photonic platforms.