CsPbBr3 nanowires (NWs) and nanocrystals (NCs) were synthesized via a solution-phase method and systematically characterized to evaluate their structural and optical properties. Field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM) revealed mixed-dimensional nanostructures, including NWs up to ~15 μm in length and NCs with different morphologies. X-ray diffraction (XRD) confirmed the orthorhombic phase with sharp reflections and characteristic peak splitting, indicating high phase purity. Lattice fringes with ~0.30 nm spacing were observed in HRTEM, and selected area electron diffraction (SAED) confirmed the single-crystalline nature of the NCs. UV-Vis absorption showed a primary excitonic peak at ~520 nm, complemented by a sharp photoluminescence (PL) peak at 526 nm with a FWHM of ~23 nm. The small Stokes shift indicates minimal trap-related recombination, which is useful for high-performance optoelectronic applications.
Shang, Y., Liao, Y., Wei, Q., Wang, Z., Xiang, B., Ke, Y., et al. (2019) Highly Stable Hybrid Perovskite Light-Emitting Diodes Based on Dion-Jacobson Structure. Science Advances, 5, 1-9. https://doi.org/10.1126/sciadv.aaw8072
[3]
Dey, A., Ye, J., De, A., Debroye, E., Ha, S.K., Bladt, E., et al. (2021) State of the Art and Prospects for Halide Perovskite Nanocrystals. ACS Nano, 15, 10775-10981. https://doi.org/10.1021/acsnano.0c08903
[4]
Otero-Martínez, C., Ye, J., Sung, J., Pastoriza-Santos, I., Pérez-Juste, J., Xia, Z., et al. (2022) Colloidal Metal-Halide Perovskite Nanoplatelets: Thickness-Controlled Synthesis, Properties, and Application in Light-Emitting Diodes. Advanced Materials, 34, Article 2107105. https://doi.org/10.1002/adma.202107105
[5]
Rashid, M.U., Tahir, Z., Sheeraz, M., Ullah, F., Park, Y.C., Maqbool, F., et al. (2024) Controlled Morphological Growth and Photonic Lasing in Cesium Lead Bromide Microcrystals. Nanomaterials, 14, Article 1248. https://doi.org/10.3390/nano14151248
[6]
Abiedh, K., Salerno, M., Hassen, F. and Zaaboub, Z. (2024) Single CsPbBr3 Perovskite Microcrystals: From Microcubes to Microrods with Improved Crystallinity and Green Emission. Materials, 17, Article 4043. https://doi.org/10.3390/ma17164043
[7]
Zhang, L., Zhang, Y., He, W., Peng, H. and Dai, Q. (2020) CsPbBr3 Perovskite Nanowires and Their Optical Properties. Optical Materials, 109, Article 110399. https://doi.org/10.1016/j.optmat.2020.110399
[8]
Su, L. (2024) Room Temperature Growth of CsPbBr3 Single Crystal for Asymmetric MSM Structure Photodetector. Journal of Materials Science & Technology, 187, 113-122. https://doi.org/10.1016/j.jmst.2024.01.003
[9]
Hua, F., Du, X., Huang, Z., Gu, Y., Wen, J., Liu, F., et al. (2024) Self-Powered Photodetector Based on a CsPbBr3/n-Si Schottky Junction. Journal of the Optical Society of America B, 41, 55-61. https://doi.org/10.1364/josab.503296
[10]
Han, Q., Wang, J., Tian, S., Hu, S., Wu, X., Bai, R., et al. (2024) Inorganic Perovskite-Based Active Multifunctional Integrated Photonic Devices. Nature Communications, 15, Article No. 1536. https://doi.org/10.1038/s41467-024-45565-9
[11]
Almeida da Silva, T.C., Sánchez, R.S., Alberola-Borràs, J., Vidal, R., Mora-Seró, I. and Julián-López, B. (2025) Advancing Scalability and Sustainability of Perovskite Light-Emitting Diodes through the Microwave Synthesis of Nanocrystals. Energy & Environmental Materials, 8, e12810. https://doi.org/10.1002/eem2.12810
[12]
Sujith, P., Pratheek, M., Parne, S.R. and Predeep, P. (2023) Growth and Characterization of High-Quality Orthorhombic Phase CsPbBr3 Perovskite Single Crystals for Optoelectronic Applications. Journal of Electronic Materials, 52, 718-729.
[13]
Zhang, X., Bai, R., Fu, Y., Hao, Y., Peng, X., Wang, J., et al. (2024) High Energy Resolution CsPbBr3 Alpha Particle Detector with a Full-Customized Readout Application Specific Integrated Circuit. Nature Communications, 15, Article No. 6333. https://doi.org/10.1038/s41467-024-50746-7
[14]
Zhang, D., Eaton, S.W., Yu, Y., Dou, L. and Yang, P. (2015) Solution-Phase Synthesis of Cesium Lead Halide Perovskite Nanowires. Journal of the American Chemical Society, 137, 9230-9233. https://doi.org/10.1021/jacs.5b05404
[15]
Sun, S., Yuan, D., Xu, Y., Wang, A. and Deng, Z. (2016) Ligand-Mediated Synthesis of Shape-Controlled Cesium Lead Halide Perovskite Nanocrystals via Reprecipitation Process at Room Temperature. ACS Nano, 10, 3648-3657. https://doi.org/10.1021/acsnano.5b08193
[16]
Akkerman, Q.A., Motti, S.G., Srimath Kandada, A.R., Mosconi, E., D’Innocenzo, V., Bertoni, G., et al. (2016) Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control. Journal of the American Chemical Society, 138, 1010-1016. https://doi.org/10.1021/jacs.5b12124
[17]
Kushavah, D., Mushtaq, A. and Pal, S.K. (2023) Ultrafast and Nonlinear Optical Properties of Two-Dimensional Mo-Doped Dual Phase Inorganic Lead Halide Perovskite. The Journal of Physical Chemistry C, 127, 20014-20025. https://doi.org/10.1021/acs.jpcc.3c02307
[18]
Shamsi, J., Dang, Z., Bianchini, P., Canale, C., Di Stasio, F., Brescia, R., et al. (2016) Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr3 Nanosheets with Lateral Size Control up to the Micrometer Range. Journal of the American Chemical Society, 138, 7240-7243. https://doi.org/10.1021/jacs.6b03166
[19]
Zhou, J., Zhao, X., Jiang, Y., Zhou, Q., He, Y., Rui, J., et al. (2025) Optimizing CsPbBr3 Nanowires for High-Performance Optoelectronics: Focusing on Blue Shift and Superfast Kinetics through Amine-Rich Synthesis. Journal of Materials Chemistry C, 13, 7664-7670. https://doi.org/10.1039/d4tc05078a
[20]
Haydous, F., Gardner, J.M. and Cappel, U.B. (2021) The Impact of Ligands on the Synthesis and Application of Metal Halide Perovskite Nanocrystals. Journal of Materials Chemistry A, 9, 23419-23443. https://doi.org/10.1039/d1ta05242j
[21]
Kostopoulou, A., Sygletou, M., Brintakis, K., Lappas, A. and Stratakis, E. (2017) Low-Temperature Benchtop-Synthesis of All-Inorganic Perovskite Nanowires. Nanoscale, 9, 18202-18207. https://doi.org/10.1039/c7nr06404g
[22]
Holzwarth, U. and Gibson, N. (2011) The Scherrer Equation versus the Debye-Scherrer Equation. Nature Nanotechnology, 6, 534-534. https://doi.org/10.1038/nnano.2011.145
[23]
Hassanzadeh-Tabrizi, S.A. (2023) Precise Calculation of Crystallite Size of Nanomaterials: A Review. Journal of Alloys and Compounds, 968, Article 171914. https://doi.org/10.1016/j.jallcom.2023.171914
[24]
Wang, W., Wu, Y., Wang, D. and Zhang, T. (2019) Effective Control of the Growth and Photoluminescence Properties of CsPbBr3/Cs4PbBr6 Nanocomposites by Solvent Engineering. ACS Omega, 4, 19641-19646. https://doi.org/10.1021/acsomega.9b02248
[25]
Protesescu, L., Yakunin, S., Bodnarchuk, M.I., Krieg, F., Caputo, R., Hendon, C.H., et al. (2015) Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X=Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut. Nano Letters, 15, 3692-3696. https://doi.org/10.1021/nl5048779
[26]
López, C.A., Abia, C., Alvarez-Galván, M.C., Hong, B., Martínez-Huerta, M.V., Serrano-Sánchez, F., et al. (2020) Crystal Structure Features of CsPbBr3 Perovskite Prepared by Mechanochemical Synthesis. ACS Omega, 5, 5931-5938. https://doi.org/10.1021/acsomega.9b04248
[27]
Xing, J., Zhao, Y., Askerka, M., Quan, L.N., Gong, X., Zhao, W., et al. (2018) Color-stable Highly Luminescent Sky-Blue Perovskite Light-Emitting Diodes. Nature Communications, 9, Article No. 3541. https://doi.org/10.1038/s41467-018-05909-8
[28]
da Silva, T.C.A., Fernández-Saiz, C., Sánchez, R.S., Gualdrón-Reyes, A.F., Mora-Seró, I. and Julián-López, B. (2025) A Soft-Chemistry Route to Prepare Halide Perovskite Nanocrystals with Tunable Emission and High Optical Performance. Journal of Sol-Gel Science and Technology, 114, 131-138. https://doi.org/10.1007/s10971-023-06171-1
