Kim, Seongchan Lee, Kyumin Gwak, Namyoung Shin, Seungki Seo, Jaeyoung Noh, Sung Hoon Kim, Doyeon Lee, Yunseo Kong, Hyein Yeo, Dongjoon Kim, Tae Ann Lee, Seung­Yong Jang, Jaeyoung Oh, Nuri 2024-08-19T06:30:23Z 2024-08-19T06:30:23Z 2024-08-18 2024-05 0935-9648 https://pubs.kist.re.kr/handle/201004/150465 Zinc pnictides, particularly Zn3As2, hold significant promise for optoelectronic applications owing to their intrinsic p-type behavior and appropriate bandgaps. However, despite the outstanding properties of colloidal Zn3As2 nanocrystals, research in this area is lacking because of the absence of suitable precursors, occurrence of surface oxidation, and intricacy of the crystal structures. In this study, a novel and facile solution-based synthetic approach is presented for obtaining highly crystalline p-type Zn3As2 nanocrystals with accurate stoichiometry. By carefully controlling the feed ratio and reaction temperature, colloidal Zn3As2 nanocrystals are successfully obtained. Moreover, the mechanism underlying the conversion of As precursors in the initial phases of Zn3As2 synthesis is elucidated. Furthermore, these nanocrystals are employed as active layers in field-effect transistors that exhibit inherent p-type characteristics with native surface ligands. To enhance the charge transport properties, a dual passivation strategy is introduced via phase-transfer ligand exchange, leading to enhanced hole mobilities as high as 0.089 cm(2) V-1 s(-1). This study not only contributes to the advancement of nanocrystal synthesis, but also opens up new possibilities for previously underexplored p-type nanocrystal research. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Colloidal Synthesis of P-Type Zn3As2 Nanocrystals Article 10.1002/adma.202310671 1 Advanced Materials, v.36, no.21 Advanced Materials 36 21 N scie scopus 001158236800001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics ZINTL PHASES QUANTUM DOTS TRANSITIONS TRANSISTORS TRANSPORT CIRCUITS ZN3P2 PERFORMANCE NANOWIRES PROSPECTS colloidal nanocrystals FETs II-V semiconductors p-type zinc arsenide