Convergence and Device Innovation: From Low- Dimensional/Lead-Free Perovskite Photovoltaics to Micro/Nano Light-Emitting Displays

Main Article Content

Haotian Gao

Keywords

lead-free low -dimensional perovskites, micro/nano light -emitting displays, dimensionality modulation, optoelectronic integration

Abstract

Current optoelectronic technologies still face several limitations, including the efficiency ceiling of crystalline silicon, the instability of conventional perovskites, and transfer -related challenges in Micro -LED fabrication. This study centers on the cross -boundary integration of lead -free, low -dimensional perovskite photovoltaics and micro/nano light -emitting displays. Efficient control of carrier dynamics is critical for improving both photovoltaic conversion and light -emitting performance. Through lead -free substitution and dimensional reduction (i.e., the construction of low -dimensional superstructures), an intrinsic water -oxygen barrier is established to significantly enhance the chemical stability of the m aterials. In addition, quantum confinement modifies the density of states (DOS) distribution, thereby substantially boosting the radiative recombination efficiency. By leveraging fundamental physical strategies such as band engineering, this research may support the development of high -performance optoelectronic devices with improved stability and efficiency.

Abstract 14 | PDF Downloads 9

References

  • [1] Zhou, C. (2024). Research on the photoelectric properties of lead -free perovskite materials (Master’s thesis, Guangzhou University). https://doi.org/10.27040/d.cnki.ggzdu.2024.000397.
  • [2] Wu, S. Y., Ma, S. L., Zhao, C. Y., Li, S. X., Ye, M. Y., Qi, M. Y., ... & Cui, T. (2025). Regulation of photoelectric properties of lead -free double perovskite Cs2TeCl6 under hi gh pressure. Acta Physica Sinica, 74(17), 68-75.
  • [3] Di, J. Y., Cui, Y., Wu, R. X., & Lu, B. (2025). High -performance zero-dimensional lead-free perovskite thin film photodetectors. Chinese Optics, 18(04), 748-755.
  • [4] Zhang, Y. J. (2024). First -principles study based on ABX_3 -type inorganic lead -free perovskites (Master’s thesis, Hebei University). https://doi.org/10.27103/d.cnki.ghebu.2024.002015.
  • [5] Yang, J., Pi, M. Y., Zhang, D. K., Tang, X. S., & Du, J. (2021). Research progress of low -dimensional perovskite photodetectors. Chinese Journal of Luminescence, 42(06), 755-773.
  • [6] Peng, X. F. (2023). Defect passivation and mechanism study of quasi -two-dimensional perovskite light- emitting devices (Doctoral dissertation, University of Electronic Science and Technology of China). https://doi.org/10.27005/d.cnki.gdzku.2023.000030.
  • [7] Liu, R., Hu, X., Xu, M., Ren, H., & Yu, H. (2023). Layered low dimensi onal Ruddlesden-Popper and Dion-Jacobson perovskites: From material properties to photovoltaic device progress. ChemSusChem, 16(19), e202300736. https://doi.org/10.1002/cssc.202300736.
  • [8] Liu, Z., Liu, S., Zhang, X., Hao, H., Chang, X., Shen, Z., ... & Li, L. (2025). Insights into A -site ion engineering for boosting luminescence efficiency in lead -free perovskites. Journal of Physical Chemistry Letters, 7443-7450. https://doi.org/10.1021/acs.jpclett.5c01417.
  • [9] Yuan, J., Diao, J., Zheng, Y., Hao, J., Sun, B., Zhao, G., ... & Jiang, X. (2025). Hierarchical microfluidic epitaxy of Sn4+ -stabilized core –shell perovskites with lead -free double perovskite shells for highly efficient and ultra -stable emission. Advanced Functional Materials , 36(10), e13146. https://doi.org/10.1002/adfm.202513146.
  • [10] Liu, D., Nie, X., Li, X. G., Li, D. L., Chen, Z., Liao, S., ... & Su, S. J. (2025). Highly efficient perovskite/organic hybrid white electroluminescent devices with extended operational lifetime and wide color gamut. Advanced Materials, 37(38), e2507820. https://doi.org/10.1002/adma.202507820.
  • [11] Zhang, L., Liu, B., Lv, X., Zhang, G., Li, C., Zhang, W., ... & Liu, C. (2026). Photovoltage-driven two- transistor-one-diode perovskite pixels for in -cell optical sensing displays. Advanced Materials, 38(17), e22776. https://doi.org/10.1002/adma.202522776.
  • [12] Lee, H., Moon, T., Lee, Y., & Kim, J. (2025). Structural mechanisms of quasi -2D perovskites for next - generation photovoltaics. Nano-Micro Letters, 17(1), 139. https://doi.org/10.1007/s40820-024-01609-9.
  • [13] Zhang, Z., Zhu, R., Li, G., et al. (2026). Photoswitchable isomers to improve grain boundary resilience and perovskite solar cells stability under light cycling. Nature Energy , 11, 623 –632. https://doi.org/10.1038/s41560-026-01993-z.
  • [14] Shen, X., Hui, W. T., Hu, S., et al. (2026). Crystal -facet-directed all-vacuum-deposited perovskite solar cells. Nature Materials. Advance online publication. https://doi.org/10.1038/s41563-026-02494-w.
  • [15] Lian, Y., Wang, Y., Yuan, Y., Ren, Z., Tang, W., Liu, Z., ... & Di, D. (2025). Downscaling micro- and nano-perovskite LEDs. Nature, 640(8057), 1-7. https://doi.org/10.1038/s41586-025-08685-w.
  • [16] Peng, J., Xue, X., Liu, S., Yang, Y., Yang, T., Zhu, B., ... & Ji, W. (2026). Maximizing perovskite electroluminescence with ordered 3D/2D heterojunction. Nature, 651(8104), 1 -7. https://doi.org/10.1038/s41586-026-10134-1.
  • [17] Pandey, A., Reddeppa, M., & Mi, Z. (2024). Recent progress on micro -LEDs. Light: Advanced Manufacturing, 4(4), 519-542. https://doi.org/10.37188/lam.2023.031.
  • [18] Xiao, Z. W. (2020). Improving the efficiency of perovskite light -emitting devices by using different defect passivation methods (Master’s thesis, Southwest University). https://doi.org/10.27684/d.cnki.gxndx.2020.002385.