Vacancy-Induced Extraordinary Second Harmonic Generation Response for Diamond-Like Cu3PS4 - Details

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Abstract：

Improving　polarizability　is　an　important　strategy　for　designing　high-performance　mid-infrared　(mid-IR)　nonlinear　optical　(NLO)　materials.　The　substitution　of　equivalent　or　aliovalent　atoms　can　manipulate　the　polarizability　by　adjusting　the　symmetry　of　the　polyhedron.　Herein,　the　Li+　and　Cd2+　are　introduced　into　the　Cu3PS4　as　the　equivalent　and　aliovalent　dopants　for　the　Cu　site.　As　a　result,　Li+　can　significantly　improve　the　bandgap　(Eg)　of　LixCu3−xPS4　from　2.38　to　2.88 eV,　leading　to　a　higher　laser-induced　damage　threshold　(LIDT)　of　4.9　times　than　AgGaS2　(AGS)　with　a　comparable　second　harmonic　generation　(SHG)　response　of　AGS　(26−45 µm).　Interestingly,　Cd2+　can　improve　the　SHG　response　and　enlarge　the　Eg　simultaneously.　As　a　result,　Cd0.4Cu2.2PS4　has　a　large　SHG　response　of　10　×　AGS　at　2050 nm　(26−45 µm)　and　a　LIDT　of　2.6　×　AGS.　Theoretical　calculations　reveal　that　lattice　vacancies　induced　by　Cd2+　significantly　boost　polarizability　compared　to　LixCu3−xPS4　with　no　vacancy,　leading　to　a　strong　NLO　response.　©　2024　Wiley-VCH　GmbH.

Keyword：

aliovalent substitution lattice vacancies Mid-IR NLO polarizability SHG response

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[ 1 ] [Guo W.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Guo W.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 3 ] [Fu Y.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 4 ] [Fu Y.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 5 ] [Cui H.-H.]Mechanical and Electrical Engineering Practice Center, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Li L.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 7 ] [Yu Y.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Luo Z.-Z.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 9 ] [Luo Z.-Z.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 10 ] [Zou Z.]Key Laboratory of Eco-materials Advanced Technology, Key Laboratory of Advanced Materials Technologies International (HongKong Macao and Taiwan) Joint Laboratory on Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
[ 11 ] [Zou Z.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian, Fuzhou, 350108, China
[ 12 ] [Zou Z.]Eco-materials and Renewable Energy Research Center, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
[ 13 ] [Zou Z.]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China

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Source ：

Advanced Optical Materials

ISSN： 2195-1071

Year： 2024

Issue： 18

Volume： 12

8 . 0 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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