Research Groups

RESEARCH UNIT: Nanostructured Materials for Optoelectronics and Energy Harvesting

Laser Processing Research Group (LPR)

During 2020, the members of the group co-authored five works in high impact factor journals in the field of nanomaterials for environmental applications (energy storage, photocatalysis), and the already published works were cited about 200 times. A patent from the group was also awarded with the Gold Medal in PRO INVENT 2020.

The aim of the Laser Processing Research Group is to obtain nanostructured functional materials through different laser techniques such as Pulsed Laser Deposition (PLD), Matrix Assisted Pulsed Laser Evaporation (MAPLE), Laser Direct Write (LDW), and Laser Surface Processing (LSP). The group develops high quality thin films of organic-inorganic nanocomposites and nanostructures such as semiconductor quantum dots, carbon nanotubes and graphene-based composites using MAPLE and PLD techniques.

The group is also investigating the chemical transformation by LSP of complex systems made of carbon-based nanomaterials, and the recrystallization of different types of nanostructures for energy, environmental, electronics and sensing applications. The experimental work developing the synthesis of the materials and their compositional-structural characterisation is complemented with computer simulations of the laser-matter interactions.


  • Dr. Ángel Pérez del Pino - Tenured Scientist
  • Dr. Enikö György - Tenured Scientist
  • Dr. Yasmín Esqueda - Postdoctoral Researcher
  • Pablo García Lebière - PhD Researcher
  • Maroua Omezzine - Master Student
  • Alifhers Salim Mestra - PhD Researcher
  • Nabil Abomailek - Undergraduate Student
  • Carlos García - Undergraduate Student
  • Roger Morales - Undergraduate Student
  • Eleonor Artot - Undergraduate Student
  • Anna Bertomeu - Undergraduate Student

SEM images of (a) reduced graphene oxide – carbon nanotube – zinc oxide electrode, (b) reduced graphene oxide – lanthanum ferrite composite. (c) fabrication of a flexible micro-supercapacitor through laser-induced reduction of graphene oxide layer (LrGO) on polymer substrate.


The Laser Processing Research Group continued working for innovation in the field of nanostructured functional materials through different laser techniques, mainly by Matrix Assisted Pulsed Laser Evaporation (MAPLE) and Laser Surface Processing (LSP).

On the one hand, reactive inverse MAPLE was used for obtaining the deposition of thin films constituted by hybrid composites of nanocarbon (reduced graphene oxide, carbon nanotubes, graphitic carbon nitride) coated with transition metal oxide nanostructures as ZnO or TiO2. Even nanocarbon - (Bi, La) ferrite compounds were developed by laser irradiation of targets containing graphene oxide / ferrites nanofibers mixtures. The developed method, in which complex precursor targets were used, not only allowed the deposition but also the chemical transformation of the precursors leading to the synthesis of materials with unique structures and remarkable functionalities. Accordingly, thin electrodes for supercapacitive energy storage as well as photocatalysts able to decompose organic dyes and antibiotics (chloramphenicol) were successfully fabricated.

On the other hand, LSP method was employed for the eco-friendly and low cost fabrication of graphene-based flexible electrodes either on polymer substrates or in self-standing configuration. A low power visible laser system was used for the irradiation of graphene oxide layers sandwiched between glass slides with the aim to provoke an efficient reduction of graphene oxide material through laser-induced spatially confined heating. In such way, robust, bendable and highly conducting graphene-based electrodes were manufactured, finding application in energy storage and electrochemical sensing technologies.


Deposition and Growth of Functional Nanomaterials by LDW and MAPLE Techniques
A. Pérez del Pino
Crystals 2020 10, 1066  10.3390/cryst10111066

Laser synthesis of TiO2–carbon nanomaterial layers with enhanced photodegradation efficiency towards antibiotics and dyes
R. Ivan, A. Pérez del Pino, I. Yousef, C. Logofatu, E. György
Journal of Photochemistry & Photobiology A: Chemistry 2020, 399 112616 10.1016/j.jphotochem.2020.112616 

New fabrication method for producing reduced graphene oxide flexible electrodes by using low-power visible laser diode engraving system
A. Chuquitarqui, L. C. Cotet, M. Baia, E. Gyorgy, K. Magyari, L. Barbu-Tudoran, L. Baia, M. Díaz-González, C. Fernandez Sanchez, A. Perez del Pino
Nanotechnology 2020, 31, 32, 325402, 10.1088/1361-6528/ab8d67

Enhanced UV-Vis Photodegradation of Nanocomposite Reduced Graphene Oxide/Ferrite Nanofiber Films Prepared by Laser-Assisted Evaporation
A.Queraltó, E.György, R.Ivan, A.Pérez del Pino, R.Frohnhoven, S. Mathur
Crystals 2020, 10, 4, 271, 10.3390/cryst10040271 

Carbon–based nanomaterials and ZnO ternary compound layers grown by laser technique for environmental and energy storage applications
R.Ivan, C.Popescu, A.Pérez del Pino, C.Logofatu, E. György
Applied Surface Science 2020, 509, 145359, 10.1016/j.apsusc.2020.145359 


Outreach activities

Guest edition in the Special Issue of Crystals (MDPI; ISSN 2073-4352): “Deposition and Growth of Functional Nanomaterials by LDW and MAPLE Techniques” by Ángel Pérez

Participation on "A Researcher in Your Classroom 2.0" with two talks to two groups of 25-30 students aged 16-18 from the “Institut Can Vilumara" in L'Hospitalet de Llobregat: "The scientific career told from the front line" and "Ecological transition: Nanomaterials to the rescue" (16-18/12/2020)


Gold medal for the patent "Fabrication of flexible graphene oxide electrodes by laser radiation" in the 18th International Exhibition of Research, Innovations and Inventions, PRO INVENT 2020 (Cluj-Napoca, Romania) by Ángel Pérez

Main projects

Advanced fabrication of hybrid nanocarbon-based electrodes for supercapacitor applications
Spanish Ministry of Science and Innovation, ENE2017-89210-C2-1-R
Enikö György, Angel Perez del Pino
2017 - 2020

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Web & Graphic Editor
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