Get Our e-AlertsSubmit Manuscript
Energy Material Advances / 2022 / Article

Editorial | Open Access

Volume 2022 |Article ID 9865891 | https://doi.org/10.34133/2022/9865891

Liberato Manna, Osman M. Bakr, Sergio Brovelli, Hongbo Li, "Perovskite Semiconductor Nanocrystals", Energy Material Advances, vol. 2022, Article ID 9865891, 2 pages, 2022. https://doi.org/10.34133/2022/9865891

Perovskite Semiconductor Nanocrystals

Received02 Feb 2022
Accepted06 Feb 2022
Published22 Feb 2022

The world is facing the grand challenges of balancing economic growth and environmental protection, urging the development of sustainable energy sources and more efficient energy consumption [1]. To tackle these challenges, new materials are in great demand. In this respect, semiconductor nanocrystals (NCs) have shown great potential in light harvesting applications such as photovoltaics, luminescent solar concentrators, and photocatalysis/photosynthesis [24]. They have also been intensively exploited in light-emitting devices such as light-emitting diodes (LEDs), lasers, and luminescent displays as well as other emerging fields, for example, photodetectors and radiation detectors, and in biomedicine [58]. In the past few years, halide perovskite and perovskite analogues have emerged as important NC materials for their unique features, such as defect tolerance, emission color purity, tunable band gap, and intriguing charge/exciton transport behavior. Significant efforts have been devoted to the synthesis and investigation of perovskite NCs with novel compositions and structures for a variety of optoelectronic applications [9].

This special issue of Energy Materials Advances, consisting of two review and six research articles, focuses on the recent developments in the synthesis and tuning of the properties of halide perovskite NCs and other emerging NCs. These articles cover a broad selection of materials, such as lead-free perovskite NCs, inorganic perovskite NCs, lead-free double perovskite NCs, type-II heterostructured NCs, ternary I-III-VI2 NCs, and graphene quantum dots. The topics covered range from fundamental understanding of doping, synthesis, and spectroscopy to the application of NCs in solar cells and LEDs.

Specifically, Shan’s group provides a comprehensive review article on the recent advances in lead-free perovskite NCs for optoelectronic devices [10] (Article ID 5198145). This review covers the design routes, morphologies, optoelectronic properties, and environmental stability issues as well as the preliminary achievements of lead-free perovskite NCs in versatile optoelectronic applications, such as light-emitting devices, solar cells, photodetectors, and photocatalysis. The review article written by Li’s group focuses on the emerging topic of LEDs based on two-dimensional perovskite and CdSe-based nanoplatelets (NPLs) (Article ID 9857943). This review covers the synthesis strategy of NPLs, the recent progress on LEDs based on NPLs, and the opportunities and challenges in this field. Mohammed’s group reports air-resistant lead halide perovskite NCs embedded into a polyimide matrix with intrinsic microporosity [11] (Article ID 9873846). The encapsulated CsPbBr3 NCs not only have enhanced optical and photoluminescence (PL) stability but also show a much longer excited state lifetime due to the reduced density of surface trap states. This encapsulation method paves the way to the large-scale synthesis and implementation of perovskite NCs in optical devices. Bae’s group presents their recent work on pushing the band gap envelop of quasi-type II heterostructured ZnSe/ZnSe1-XTeX/ZnSe NCs to the blue region of the spectrum [12] (Article ID 3245731). The emission wavelength can be tuned from blue to orange by varying the composition of the emissive ZnSe1-XTeX layers grown between the ZnSe seed and the shell layer. The defect-free heterostructured NCs exhibit near-unity photoluminescence quantum yield, and dichromatic white NC-based light-emitting diodes are demonstrated. Li’s group reports a modification of the interfacial barrier in graphene/silicon Schottky barrier solar cells using graphene oxide quantum dots (GOQDs) [13] (Article ID 8481915). The carrier tunneling and recombination at the Schottky barrier can be controlled by the thickness and size of GOQDs, and a maximal 13.67% power conversion efficiency is achieved with an optimized barrier for GOQDs. Xia’s group discusses their progress on the tunable photoluminescence enabled by lattice doping of lanthanide ions in Cs2AgInCl6 NCs through a hot-injection synthesis method [14] (Article ID 2585274). Lanthanide ions, including Dy3+, Tb3+, and Sm3+, occupy the In3+ sites. The doped Cs2AgInCl6:Ln3+ NCs exhibit tunable PL emission in the visible wavelength range owing to the intrinsic transitions from the lanthanide ions. This enables their application in fluorescent labeling and anticounterfeiting technology. The research paper from Brovelli’s group studies intrinsic and extrinsic exciton recombination pathways in ternary I-III-VI2 AgInS2 NCs [15] (Article ID 1959321). Using temperature-dependent complementary spectroscopic, spectroelectrochemical, and magnetooptical investigations, the band structure and the excitonic recombination mechanisms in stoichiometric AgInS2 NCs are revealed.

Overall, this special issue reviews the exciting progress in various fields of NCs and presents the frontier of NC-related research from many leading groups around the world.

Conflicts of Interest

The authors declare that there is no conflict of interest regarding the publication of this article.

Acknowledgments

We are very much grateful to all the authors for their contributions to this exciting issue. We also thank all reviewers and the editorial board for organizing this special issue.

Liberato Manna
Osman M. Bakr
Sergio Brovelli
Hongbo Li

References

  1. S. Chu, Y. Cui, and N. Liu, “The path towards sustainable energy,” Nature Materials, vol. 16, no. 1, pp. 16–22, 2017. View at: Publisher Site | Google Scholar
  2. F. Meinardi, H. McDaniel, F. Carulli et al., “Highly efficient large-area colourless luminescent solar concentrators using heavy-metal-free colloidal quantum dots,” Nature Nanotechnology, vol. 10, no. 10, pp. 878–885, 2015. View at: Publisher Site | Google Scholar
  3. X.-B. Li, C.-H. Tung, and L.-Z. Wu, “Semiconducting quantum dots for artificial photosynthesis,” Nature Reviews Chemistry, vol. 2, no. 8, pp. 160–173, 2018. View at: Publisher Site | Google Scholar
  4. M. V. Kovalenko, “Opportunities and challenges for quantum dot photovoltaics,” Nature Nanotechnology, vol. 10, no. 12, pp. 994–997, 2015. View at: Publisher Site | Google Scholar
  5. Y.-S. Park, J. Roh, B. T. Diroll, R. D. Schaller, and V. I. Klimov, “Colloidal quantum dot lasers,” Nature Reviews Materials, vol. 6, no. 5, pp. 382–401, 2021. View at: Publisher Site | Google Scholar
  6. Y. Wei, Z. Cheng, and J. Lin, “An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs,” Chemical Society Reviews, vol. 48, no. 1, pp. 310–350, 2019. View at: Publisher Site | Google Scholar
  7. M. Liu, N. Yazdani, M. Yarema, M. Jansen, V. Wood, and E. H. Sargent, “Colloidal quantum dot electronics,” Nature Electronics, vol. 4, no. 8, pp. 548–558, 2021. View at: Publisher Site | Google Scholar
  8. Q. Chen, J. Wu, X. Ou et al., “All-inorganic perovskite nanocrystal scintillators,” Nature, vol. 561, no. 7721, pp. 88–93, 2018. View at: Publisher Site | Google Scholar
  9. S. Bera and N. Pradhan, “Perovskite nanocrystal heterostructures: synthesis, optical properties, and applications,” ACS Energy Letters, vol. 5, no. 9, pp. 2858–2872, 2020. View at: Publisher Site | Google Scholar
  10. F. Zhang, Z. Ma, Z. Shi et al., “Recent advances and opportunities of lead-free perovskite nanocrystal for optoelectronic application,” Energy Material Advances, vol. 2021, article 5198145, 38 pages, 2021. View at: Publisher Site | Google Scholar
  11. H. Yang, L. Gutiérrez-Arzaluz, P. Maity et al., “Air-resistant lead halide perovskite nanocrystals embedded into polyimide of intrinsic microporosity,” Energy Material Advances, vol. 2021, article 9873846, 9 pages, 2021. View at: Publisher Site | Google Scholar
  12. J. H. Chang, H. J. Lee, S. Rhee et al., “Pushing the band gap envelope of quasi-type II heterostructured nanocrystals to blue: ZnSe/ZnSe1-xTeX/ZnSe spherical quantum wells,” Energy Material Advances, vol. 2021, article 3245731, 10 pages, 2021. View at: Publisher Site | Google Scholar
  13. C. Geng, X. Chen, S. Li et al., “Graphene quantum dots open up new prospects for interfacial modifying in graphene/silicon Schottky barrier solar cell,” Energy Material Advances, vol. 2021, article 8481915, 11 pages, 2021. View at: Publisher Site | Google Scholar
  14. Y. Liu, M. S. Molokeev, and Z. Xia, “Lattice doping of lanthanide ions in Cs2AgInCl6 nanocrystals enabling tunable photoluminescence,” Energy Material Advances, vol. 2021, article 2585274, 9 pages, 2021. View at: Publisher Site | Google Scholar
  15. M. L. Zaffalon, V. Pinchetti, A. Camellini et al., “Intrinsic and extrinsic exciton recombination pathways in AgInS2 colloidal nanocrystals,” Energy Material Advances, vol. 2021, article 1959321, Article ID 1959321, 10 pages, 2021. View at: Publisher Site | Google Scholar

Copyright © 2022 Liberato Manna et al. Exclusive Licensee Beijing Institute of Technology Press. Distributed under a Creative Commons Attribution License (CC BY 4.0).

 PDF Download Citation Citation
Views506
Downloads460
Altmetric Score
Citations