Matrix-Assisted Pulsed Laser Evaporation of Functional Thin Films

Matrix-Assisted Pulsed Laser Evaporation of functional thin films is a versatile deposition technique derived from pulsed laser deposition, designed to transfer delicate molecular and polymeric compounds onto substrates with minimal damage. In this approach, a solute of functional material is dissolved or suspended in a volatile solvent, frozen to form a solid target, and irradiated by a pulsed laser. Energy absorption by the frozen matrix leads to gentle desorption of intact molecules, resulting in uniform coatings of organic, hybrid and composite materials. Variants such as resonant infrared MAPLE and emulsion-based MAPLE broaden the range of compatible materials and optimise film morphology. Control over laser fluence, pulse frequency and target composition allows fine tuning of film thickness, porosity and crystallinity. This technique underpins advances in organic electronics, photovoltaics, biointerfaces and smart coatings, offering a route to environmentally benign processes and scalable manufacturing of high-performance optoelectronic and sensing devices.

Research from Nature Portfolio

Recent studies have demonstrated the potential of biocompatible organic films deposited by matrix-assisted laser evaporation on nanostructured conductive electrodes. Investigations of nucleobase thin films on patterned indium tin oxide substrates reveal how surface patterning enhances light–matter interactions, improving transmission, emission and charge transport. Morphological analyses show that nano-patterned interfaces increase the effective contact area and facilitate multiple internal reflections, thereby boosting both optical and electrical performance. These findings underscore the feasibility of developing low-cost, biodegradable optoelectronic components for green electronics.

Matrix-Assisted Pulsed Laser Evaporation of Functional Thin Films publication trend

The graph below shows the total number of articles in matrix-assisted pulsed laser evaporation of functional thin films across all publications each year (not limited to Nature Index journals).

Technical terms

Matrix-Assisted Pulsed Laser Evaporation (MAPLE): A thin-film deposition method in which a frozen solvent-matrix target containing functional material is irradiated by a pulsed laser, gently transferring organic or hybrid molecules onto a substrate.

Frozen Matrix Target: A solidified mixture of solvent and solute prepared by freezing, used as the source for MAPLE to ensure low-damage desorption of delicate molecules.

Resonant Infrared MAPLE (RIR-MAPLE): A MAPLE variant employing infrared laser wavelengths tuned to the solvent’s vibrational modes, enhancing absorption and reducing damage to the solute.

Bulk Heterojunction: A blend of donor and acceptor materials forming a nanoscale interpenetrating network, commonly used in organic photovoltaic devices to facilitate efficient charge separation and transport.

Laser Fluence: The energy per unit area delivered by a laser pulse, a critical parameter for controlling ablation rate, film morphology and molecular integrity during MAPLE deposition.

References

1. Smart Coatings Prepared via MAPLE Deposition of Polymer Nanocapsules for Light-Induced Release. Molecules (2021).
2. Nucleobases thin films deposited on nanostructured transparent conductive electrodes for optoelectronic applications. Scientific Reports (2021).
3. Organic Thin Films Deposited by Matrix-Assisted Pulsed Laser Evaporation (MAPLE) for Photovoltaic Cell Applications: A Review. Coatings (2021).
4. Macrocyclic Compounds: Metal Oxide Particles Nanocomposite Thin Films Deposited by MAPLE. Materials (2023).