Impact of Surface Chemistry on the Application of Colloidal Semiconductor Nanocrystals

Raquel E. Galian^a, Ignacio Rosa Pardo^a, Alejandro Cortés Villena^a, Rita Toledo Cevallos^a, Julia Pérez Prieto^a

^aUniversidad de Valencia - ICMol (Institute of Molecular Science), Catedrático José Beltrán Martinez 2, Paterna, Spain

Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)

#NCFun23 - Fundamental Processes in Nanocrystals and 2D Materials

VALÈNCIA, Spain, 2023 March 6th - 10th

Organizers: Valerio Pinchetti and Shalini Singh

Oral, Raquel E. Galian, presentation 146
DOI: https://doi.org/10.29363/nanoge.matsus.2023.146
Publication date: 22nd December 2022

Colloidal semiconductor nanocrystals (NCs) such as chalcogenides and perovskites have outstanding optical and electronic properties that make them interesting for multiple applications that involve, sensing, solar cells, light-emitting device technology, and more recently photocatalysis. ¹

Tailoring the surface chemistry of colloidal metal halide perovskite NCs (AMX₃; A= monovalent metal such as CH₃NH₃⁺, or Cs⁺; M= Pb²⁺, Sn²⁺; and X= Cl^-, Br^-, I^-) is very challenging and crucial to determine their final properties. Therefore, the nature of the organic capping agents and their interaction with the surface atoms will be relevant to control the photophysical properties of the nanocrystals and prepare novel assemblies. The most common ligands, according to the covalent bond classification, used to obtain highly emissive and stable colloidal perovskite NCs are X-type and L-type binding ligands (Figure 1).

Several examples of the role of those types of ligands in i) the emissive properties of the NCs²; ii) the formation of blue emissive 2D low-dimensional materials³; iii) the photocatalytic ability of the metal halide perovskite NCs,⁴ and iv) the preparation of nano-heterostructures for NIR light-harvesting applications ⁵ will be discussed.

References:

[1] Dey, A.; Ye, J.; De, A.; Debroye, E.; Ha, S. K.; Bladt, E.; Kshirsagar, A. S.; Wang, Z.; Yin, J.; Wang, Y.; Quan, L. N.; Yan, F.; Gao, M.; Li, X.; Shamsi, J.; Debnath, T.; Cao, M.; Scheel, M. A.; Kumar, S.; Steele, J. A.; Gerhard, M.; Chouhan, L.; Xu, K.; Wu, X.-g.; Li, Y.; Zhang, Y.; Dutta, A.; Han, C.; Vincon, I.; Rogach, A. L.; Nag, A.; Samanta, A.; Korgel, B. A.; Shih, C.-J.; Gamelin, D. R.; Son, D. H.; Zeng, H.; Zhong, H.; Sun, H.; Demir, H. V.; Scheblykin, I. G.; Mora-Seró, I.; Stolarczyk, J. K.; Zhang, J. Z.; Feldmann, J.; Hofkens, J.; Luther, J. M.; Pérez-Prieto, J.; Li, L.; Manna, L.; Bodnarchuk, M. I.; Kovalenko, M. V.; Roeffaers, M. B. J.; Pradhan, N.; Mohammed, O. F.; Bakr, O. M.; Yang, P.; Müller-Buschbaum, P.; Kamat, P. V.; Bao, Q.; Zhang, Q.; Krahne, R.; Galian, R. E.; Stranks, S. D.; Bals, S.; Biju, V.; Tisdale, W. A.; Yan, Y.; Hoye, R. L. Z.; Polavarapu, L., State of the Art and Prospects for Halide Perovskite Nanocrystals. ACS Nano 2021, 15 (7), 10775-10981.

[2] Rosa-Pardo, I.; Cevallos-Toledo, R. B.; Polavarapu, L.; Arenal, R.; Galian, R. E.; Pérez-Prieto, J., Revisiting the nontemplate approach for the synthesis of highly green emissive hybrid perovskite nanocrystals: platelets or spheres? Nanoscale 2022, 14 (4), 1160-1164.

[3] Cevallos-Toledo, R. B.; Rosa-Pardo, I.; Arenal, R.; Oestreicher, V.; Fickert, M.; Abellán, G.; Galian, R. E.; Pérez-Prieto, J., Ruddlesden–Popper Hybrid Lead Bromide Perovskite Nanosheets of Phase Pure n=2: Stabilized Colloids Stored in the Solid State. 2021, 60 (52), 27312-27317

[4] Rosa-Pardo, I.; Casadevall, C.; Schmidt, L.; Claros, M.; Galian, R. E.; Lloret-Fillol, J.; Pérez-Prieto, J., The synergy between the CsPbBr3 nanoparticle surface and the organic ligand becomes manifest in a demanding carbon–carbon coupling reaction. Chemical Communications 2020, 56 (37), 5026-5029.

[5] Estebanez, N.; Cortés-Villena, A.; Ferrera-González, J.; González-Béjar, M.; Galian, R. E.; González-Carrero, S.; Pérez-Prieto, J., Linear Coassembly of Upconversion and Perovskite Nanoparticles: Sensitized Upconversion Emission of Perovskites by Lanthanide-Doped Nanoparticles. 2020W, 30 (46), 2003766

Acknowledgements:

We thank the Spanish Ministry of Science and Innovation (MICINN), projects PID2020115710GB-I00, Agencia Estatal de Investigación-AEI and MICIU Unit of Excellence “Maria de Maeztu” CEX2019-000919-M, as well as the Generalitat Valenciana projects PROMETEO/2019/80 and IDIFEDER/2018/064, all of them partially co-financed with FEDER funds.

nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.

MATSUS

Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.

International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics

The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.

International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics

The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.