Quantum Dot–Based Solar Cells: Advancements, Challenges, and Future Prospects
Article Sidebar
Main Article Content
Quantum dot–based solar cells have rapidly grown into one of the most promising candidates in next-generation photovoltaics, largely due to their quantum confinement–driven tunability, strong absorption coefficients, and compatibility with solution-processed fabrication. Their unique optical behaviour, particularly the ability to tailor bandgaps simply by adjusting nanocrystal size, offers a conceptual advantage over conventional bulk semiconductors. Over the past decade, improvements in surface passivation, ligand chemistry, nanocrystal synthesis, and device architecture have enabled efficiencies exceeding 18%, reflecting an impressive rise from early single-digit values (Ning et al., 2022). Yet, despite these encouraging advances, the field continues to face challenges related to long-term stability, environmental toxicity, and large-scale manufacturability. This paper traces the evolution of quantum dot solar cell research, highlighting key breakthroughs in material design, mechanistic understanding, and interfacial engineering, while also discussing the scientific and technological hurdles that must be confronted before widespread commercial adoption becomes feasible. The analysis suggests that continued collaboration between materials scientists, device engineers, chemists, and computational researchers will be crucial for realising the full potential of quantum dot photovoltaics in a sustainable global energy landscape.
Downloads
References
Akkerman, Q. A., Rainò, G., Kovalenko, M. V., & Manna, L. (2018). Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals. Nature Materials, 17(5), 394–405.
Albrecht, S., Saliba, M., Correa Baena, J.-P., Lang, F., Kegelmann, L., Mews, M., Steier, L., Abate, A., Rappich, J., & Rech, B. (2016). Towards optical optimization of planar monolithic perovskite–silicon tandem solar cells. Energy & Environmental Science, 9(1), 81–88.
Alivisatos, A. P. (1996). Semiconductor clusters, nanocrystals, and quantum dots. Science, 271(5251), 933–937.
Bawendi, M. G., Steigerwald, M. L., & Brus, L. E. (1990). The quantum mechanics of larger semiconductor clusters. Annual Review of Physical Chemistry, 41, 477–496.
Beard, M. C., et al. (2007). Multiple exciton generation in colloidal silicon nanocrystals. Nano Letters, 7(8), 2506–2512.
Brus, L. E. (1984). Electron–electron and electron‐hole interactions in small semiconductor crystallites. Journal of Chemical Physics, 80(9), 4403–4409.
Ekimov, A. I., Efros, Al. L., & Onushchenko, A. (1985). Quantum size effect in semiconductor microcrystals. JETP Letters, 40, 1136–1139.
Ellingson, R. J., et al. (2005). Highly efficient MEG in PbSe and PbS QDs. Nano Letters, 5, 865–871.
Hines, M. A., & Scholes, G. D. (2003). Colloidal PbS nanocrystals with size-tunable near-infrared emission. Advanced Materials, 15(21), 1844–1849.
Kim, S., et al. (2019). Printable colloidal quantum dot inks for flexible photovoltaics. Journal of Materials Chemistry A, 7, 8758–8767.
Klimov, V. I. (2014). Nanocrystal quantum dots. Accounts of Chemical Research, 47(2), 449–458.
Kovalenko, M. V., et al. (2015). Lead halide perovskite nanocrystals. Science, 358(6364), 745–750.
Law, M., et al. (2005). Quantum dot solar cells. Accounts of Chemical Research, 38, 55–63.
Li, X., & Shen, H. (2020). Lead-free quantum dots for PV applications. Advanced Energy Materials, 10, 1902652.
Li, Z., et al. (2019). Quantum dot passivation for perovskite solar cells. Nature Energy, 4, 404–413.
Luther, J. M., et al. (2011). Schottky and heterojunction photovoltaics from nanocrystal QDs. Nano Letters, 11, 4293–4298.
Ning, Z., et al. (2022). High-efficiency colloidal QD photovoltaics. Nature Photonics, 16, 1–10.
Nozik, A. J. (2002). Quantum dot solar cells. Physica E, 14, 115–120.
Protesescu, L., et al. (2015). CsPbX3 nanocrystals. Nano Letters, 15, 3692–3696.
Sanehira, E. M., et al. (2017). Enhanced mobility–lifetime products in PbS QDSCs. Science Advances, 3, eaao4204.
Talapin, D. V., et al. (2010). Prospects of colloidal nanocrystals. Chemical Reviews, 110, 389–458.
Tisdale, W. A., et al. (2010). Hot-electron transfer from nanocrystals. Science, 328, 1543–1547.
Zhao, X., et al. (2020). Doping strategies for conductive QD films. Advanced Functional Materials, 30, 1909630.
Zhitomirsky, D., et al. (2018). Stable QD films via molecular cross-linking. Nature Communications, 9, 1–8.
This work is licensed under a Creative Commons Attribution 4.0 International License.
All articles published in our journal are licensed under CC-BY 4.0, which permits authors to retain copyright of their work. This license allows for unrestricted use, sharing, and reproduction of the articles, provided that proper credit is given to the original authors and the source.