Hahm, Donghyo Lim, Jaemin Kim, Hyeokjun Shin, Jin-Wook Hwang, Sungkwon Rhee, Seunghyun Chang, Jun Hyuk Yang, Jeehye Lim, Chang Hyeok Jo, Hyunwoo Choi, Beomgyu Cho, Nam Sung Park, Young-Shin Lee, Doh C. Hwang, Euyheon Chung, Seungjun Kang, Chan-Mo Kang, Moon Sung Bae, Wan Ki 2024-01-19T11:30:05Z 2024-01-19T11:30:05Z 2022-09-02 2022-09 1748-3387 https://pubs.kist.re.kr/handle/201004/114721 Colloidal quantum dots (QDs) stand at the forefront of a variety of photonic applications given their narrow spectral bandwidth and near-unity luminescence efficiency. However, integrating luminescent QD films into photonic devices without compromising their optical or transport characteristics remains challenging. Here we devise a dual-ligand passivation system comprising photocrosslinkable ligands and dispersing ligands to enable QDs to be universally compatible with solution-based patterning techniques. The successful control over the structure of both ligands allows the direct patterning of dual-ligand QDs on various substrates using commercialized photolithography (i-line) or inkjet printing systems at a resolution up to 15,000 pixels per inch without compromising the optical properties of the QDs or the optoelectronic performance of the device. We demonstrate the capabilities of our approach for QD-LED applications. Our approach offers a versatile way of creating various structures of luminescent QDs in a cost-effective and non-destructive manner, and could be implemented in nearly all commercial photonics applications where QDs are used. A dual-ligand passivation system comprising photocrosslinkable ligands and dispersing ligands enables quantum dots to be universally compatible with solution-based patterning techniques. English Nature Publishing Group Direct patterning of colloidal quantum dots with adaptable dual-ligand surface Article 10.1038/s41565-022-01182-5 1 Nature Nanotechnology, v.17, no.9, pp.952 - + Nature Nanotechnology 17 9 952 + N scie scopus 000839552800001 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article LIGHT-EMITTING-DIODES DIRECT OPTICAL LITHOGRAPHY FULL-COLOR HIGH-RESOLUTION CROSS-LINKING NANOCRYSTALS DEPOSITION DISPLAYS DESIGN BRIGHT