Abstract
Van der Waals (vdW) deep-UV (DUV) nonlinear optical (NLO) crystal is an important material system recently developed. Herein, we reviewed its concept and original intention, and then summarized the discovery process of related materials, including the role of A-site cations and the resulting two-/one-dimensional vdW DUV NLO systems. Finally, we evaluated the practical DUV NLO performance and prospected the opportunities and challenges.
Funding Information
  • National Natural Science Foundation of China (12174404)