{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T02:44:26Z","timestamp":1769049866219,"version":"3.49.0"},"reference-count":52,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,1,15]],"date-time":"2023-01-15T00:00:00Z","timestamp":1673740800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["21827813"],"award-info":[{"award-number":["21827813"]}]},{"name":"National Natural Science Foundation of China","award":["21921001"],"award-info":[{"award-number":["21921001"]}]},{"name":"National Natural Science Foundation of China","award":["22175172"],"award-info":[{"award-number":["22175172"]}]},{"name":"National Natural Science Foundation of China","award":["22075283"],"award-info":[{"award-number":["22075283"]}]},{"name":"National Natural Science Foundation of China","award":["92161125"],"award-info":[{"award-number":["92161125"]}]},{"name":"National Natural Science Foundation of China","award":["2020303"],"award-info":[{"award-number":["2020303"]}]},{"name":"National Natural Science Foundation of China","award":["2021300"],"award-info":[{"award-number":["2021300"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["21827813"],"award-info":[{"award-number":["21827813"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["21921001"],"award-info":[{"award-number":["21921001"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["22175172"],"award-info":[{"award-number":["22175172"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["22075283"],"award-info":[{"award-number":["22075283"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["92161125"],"award-info":[{"award-number":["92161125"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["2020303"],"award-info":[{"award-number":["2020303"]}]},{"name":"Youth Innovation Promotion Association of Chinese Academy of Sciences","award":["2021300"],"award-info":[{"award-number":["2021300"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>A quaternary metal chalcogenide, namely K2CdGe3S8 (I), is obtained through a high-temperature solid-state approach. Compound I crystallizes with the non-centrosymmetric space group P212121. It features a 2D layer structure with [CdGe3S8] layers consisting of tetrahedral GeS4 and CdS4 units, and counter K+ embedded between the layers. The compound exhibits a powder second-harmonic generation (SHG) response of ~0.1 times that of KH2PO4 (KDP) with phase-matchable character at the laser wavelength of 1064 nm. Remarkably, it has a wide band gap (3.20 eV), which corresponds to a favorable high laser-induced damage threshold of 6.7 times that of AgGaS2. In addition, the calculated birefringence (\u0394n) is 0.039 at the wavelength of 1064 nm, which satisfies the \u0394n criteria for a promising infrared NLO material.<\/jats:p>","DOI":"10.3390\/sym15010236","type":"journal-article","created":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T03:10:34Z","timestamp":1673838634000},"page":"236","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["K2CdGe3S8: A New Infrared Nonlinear Optical Sulfide"],"prefix":"10.3390","volume":"15","author":[{"given":"Zi-Xuan","family":"Wu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wen-Fa","family":"Chen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bin-Wen","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao-Ming","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guo-Cong","family":"Guo","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2254","DOI":"10.1021\/acs.cgd.7b00214","article-title":"Mid-Infrared Nonlinear Optical Materials Based on Metal Chalcogenides: Structure\u2013Property Relationship","volume":"17","author":"Liang","year":"2017","journal-title":"Cryst. 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