2D Organic Perovskites: Revolutionizing 2D Electronics

• Prof. LOH Kian Ping and team at HK PolyU create groundbreaking CL-v phase, revolutionizing 2D materials for high-performance electronics. Published in Science.

Researchers led by Prof. LOH Kian Ping at The Hong Kong Polytechnic University have successfully synthesized all-organic two-dimensional perovskites, expanding the field of 2D materials. This breakthrough, published in the journal Science, introduces a new class of layered organic perovskites called the “Choi-Loh-v phase” (CL-v), which can be exfoliated into hexagonal flakes just a few nanometres thick. These materials exhibit high dielectric constants, making them promising for use in 2D electronics.

The team's innovative approach overcomes the limitations of traditional 3D perovskites by synthesizing 2D layers instead, allowing for a broader range of organic ions to be incorporated. The CL-v phase, stabilized by an additional B cation in the unit cell, shows superior control over current flow in transistors when used as a dielectric layer, surpassing conventional materials like silicon dioxide and hexagonal boron nitride. This research paves the way for more efficient and versatile electronic systems in the future.

What are the advantages of the new all-organic two-dimensional perovskites synthesized by researchers?

Advantages of the new all-organic two-dimensional perovskites synthesized by researchers:

• Expanded field of 2D materials with the introduction of the "Choi-Loh-v phase" (CL-v) perovskites
• Ability to exfoliate into hexagonal flakes just a few nanometres thick, allowing for precise control over material thickness
• High dielectric constants make them promising for use in 2D electronics, offering potential for improved performance
• Overcomes limitations of traditional 3D perovskites by synthesizing 2D layers, enabling a broader range of organic ions to be incorporated
• Superior control over current flow in transistors when used as a dielectric layer, surpassing conventional materials like silicon dioxide and hexagonal boron nitride
• Paves the way for more efficient and versatile electronic systems in the future, with potential for advancements in technology and innovation