TY - JOUR

T1 - Large‐Scale Ultrastable 2D Inorganic Molecular Crystal BiBr3 and Heterostructures with Superior Photoluminescence Enhancement

AU - He, Xiaoyu

AU - Wu, Yu

AU - Liu, Shenghong

AU - He, Wenke

AU - Li, Shaohua

AU - Huo, Gaohang

AU - Jiang, Letian

AU - Kapitonov, Yury

AU - Xing, Guichuan

AU - Zhao, Yinghe

AU - Li, Yuan

AU - Zhai, Tianyou

PY - 2024/9/25

Y1 - 2024/9/25

N2 - In contrast to conventional atomic crystals, two-dimensional inorganic molecular crystals (2DIMCs) possess a unique crystal structure composed of small molecules held together by van der Waals force. Such distinctive structure grants them specific chemical and physical properties highly suitable for electronic and optoelectronic applications. However, the synthesis of 2DIMCs has posed significant challenges due to the inherent issues such as uncontrollable growth orientation stemming from their natural crystalline isotropy and poor stability resulting from the weak intermolecular connections. Addressing these obstacles, the preparation of large-scale and highly-stable 2DIMC BiBr3, and its heterostructure are reported here by developing crystallization orientation engineering strategies. This approach has successfully yielded centimeter-scale 2DIMC BiBr3 with a clean and dense surface, showcasing exceptional long-term air-stability exceeding 80 days. Furthermore, the universal growth of large-scale 2DIMC BiBr3 is demonstrated on diverse substrates, including SiO2, Al2O3, and MoS2 monolayers. Notably, the resultant 2D BiBr3/MoS2 heterostructure exhibits remarkable photoluminescence enhancement. This contribution paves a universal avenue for the mature synthesis of large-scale 2DIMCs with superior stability, holding great promise for prompting their integration in practical electronic and optoelectronic devices.

AB - In contrast to conventional atomic crystals, two-dimensional inorganic molecular crystals (2DIMCs) possess a unique crystal structure composed of small molecules held together by van der Waals force. Such distinctive structure grants them specific chemical and physical properties highly suitable for electronic and optoelectronic applications. However, the synthesis of 2DIMCs has posed significant challenges due to the inherent issues such as uncontrollable growth orientation stemming from their natural crystalline isotropy and poor stability resulting from the weak intermolecular connections. Addressing these obstacles, the preparation of large-scale and highly-stable 2DIMC BiBr3, and its heterostructure are reported here by developing crystallization orientation engineering strategies. This approach has successfully yielded centimeter-scale 2DIMC BiBr3 with a clean and dense surface, showcasing exceptional long-term air-stability exceeding 80 days. Furthermore, the universal growth of large-scale 2DIMC BiBr3 is demonstrated on diverse substrates, including SiO2, Al2O3, and MoS2 monolayers. Notably, the resultant 2D BiBr3/MoS2 heterostructure exhibits remarkable photoluminescence enhancement. This contribution paves a universal avenue for the mature synthesis of large-scale 2DIMCs with superior stability, holding great promise for prompting their integration in practical electronic and optoelectronic devices.

KW - 2D materials

KW - chemical vapor deposition

KW - heterostructure

KW - inorganic molecular crystal

KW - optoelectronics

UR - https://www.mendeley.com/catalogue/cfbdb05f-247b-3cce-9285-1159b35e8927/

U2 - 10.1002/adfm.202403273

DO - 10.1002/adfm.202403273

M3 - Article

VL - 34

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

IS - 39

M1 - 2403273

ER -