Fully Thermally Evaporated Perovskite Optoelectronic Devices

Area of Science:

• Materials Science
• Optoelectronics
• Chemical Engineering

Background:

• Perovskite materials exhibit exceptional photoelectric conversion efficiencies, driving innovation in optoelectronic devices like solar cells (PSCs) and light-emitting diodes (PeLEDs).
• Current fabrication predominantly relies on spin-coating, limiting scalability and commercial viability.
• Thermal evaporation presents a solvent-free, reproducible, and scalable alternative for device fabrication.

Purpose of the Study:

• To review recent advancements in perovskite optoelectronic devices fabricated using the fully thermally evaporation (FTE) technique.
• To highlight the potential of FTE for the commercialization of perovskite solar cells (PSCs) and perovskite light-emitting diodes (PeLEDs).
• To discuss the fundamentals of thermal evaporation applied to perovskite device fabrication.

Main Methods:

• Systematic review of literature on perovskite optoelectronics fabricated via thermal evaporation.
• Focus on industry-compatible fully thermally evaporation (FTE) for perovskite layers, charge transport layers, and electrodes.
• Analysis of crystallization process control and ammonium salt evaporation in thermal evaporation.

Main Results:

• FTE enables precise control over perovskite layer formation and device integration.
• The technique facilitates large-area uniformity and high reproducibility, crucial for commercial production.
• Progress in FTE fabrication of PSCs and PeLEDs demonstrates their potential for market transition.

Conclusions:

• Fully thermally evaporated perovskite optoelectronic devices, including PSCs and PeLEDs, are nearing commercial viability.
• The FTE technique addresses key challenges in scalability, reproducibility, and process control.
• Further research into crystallization and evaporation processes will accelerate market adoption.