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Amino Acids Doping in KHP Crystals: A Critical Review

Year: 2026

Type: article

Abstract: Potassium Hydrogen Phthalate (KHP) is an important Semi-Organic Crystal for Non-Linear Optical (NLO), photonic, and optoelectronic applications. KHP shows good crystal growth behavior, high optical transparency, and structural stability. This review summarizes the effects of amino acid dopants such as Glycine, L-Tryptophan, L-Phenylalanine, and L-Lysine. Slow evaporation method has been used to grow KHP crystals so that their structural, optical, dielectric, mechanical, thermal, and nonlinear optical properties are retained. Use of amino acid induces lattice distortion and modifies the hydrogen bonding without changing the orthorhombic crystal structure. The resulting property variations depend strongly on dopant concentration and growth conditions. Crystal growth challenges, defect formation, and future research directions are also discussed.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.19756328

Authors: Devyani Supekar, Vrushali Karade, Rameshwar Bankar, Dnyaneshwari Awankar Mandip, Kapale Anil Ardad

Language: English

Topic: Nonlinear Optical Materials Research

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7159850163

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