{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,26]],"date-time":"2026-07-26T05:31:14Z","timestamp":1785043874955,"version":"3.55.0"},"reference-count":44,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T00:00:00Z","timestamp":1780444800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T00:00:00Z","timestamp":1780444800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,6,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The development of nanophotonics is hindered by a fundamental trade\u2010off between a material's refractive index (\n                    <jats:italic>n<\/jats:italic>\n                    ) and its electronic bandgap (\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>g<\/jats:italic>\n                    <\/jats:sub>\n                    ), which severely restricts the choice of materials for short\u2010wavelength applications. This challenge is particularly acute in the visible and ultraviolet (UV) spectra, where high\u2010performance devices require materials that are simultaneously highly refractive and transparent. Here, we report on the van der Waals (vdW) crystal cadmium phosphorus trisulfide (CdPS\n                    <jats:sub>3<\/jats:sub>\n                    ) as a solution to this long\u2010standing problem. Through comprehensive optical and structural characterization, we show that CdPS\n                    <jats:sub>3<\/jats:sub>\n                    possesses an anomalously high in\u2010plane refractive index across the visible spectrum approaching three in the near\u2010UV, combined with a wide indirect bandgap. This combination of properties is validated by first\u2010principles calculations and direct near\u2010field imaging of highly confined waveguide modes. These findings establish CdPS\n                    <jats:sub>3<\/jats:sub>\n                    as a leading material for UV\u2013visible photonics, opening a new pathway for the development of high\u2010density integrated circuits and metasurfaces.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70142","type":"journal-article","created":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T11:26:32Z","timestamp":1780485992000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Record Index\u2013Bandgap Trade\u2010Off: CdPS\n                    <sub>3<\/sub>\n                    as a High\u2010Index van der Waals Platform for Ultraviolet\u2013Visible Nanophotonics"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-2963-8294","authenticated-orcid":false,"given":"Maksim R.","family":"Povolotskiy","sequence":"first","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow 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UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-3534-152X","authenticated-orcid":false,"given":"Nikolay V.","family":"Pak","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9285-6695","authenticated-orcid":false,"given":"Ilya A.","family":"Zavidovskiy","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-8146-2378","authenticated-orcid":false,"given":"Konstantin V.","family":"Kravtsov","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"},{"name":"Emerging Technologies Research Center, XPANCEO  Dubai UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7685-8463","authenticated-orcid":false,"given":"Anton A.","family":"Minnekhanov","sequence":"additional","affiliation":[{"name":"Emerging Technologies Research Center, XPANCEO  Dubai UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikhail K.","family":"Tatmyshevskiy","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2373-8812","authenticated-orcid":false,"given":"Alexander V.","family":"Syuy","sequence":"additional","affiliation":[{"name":"Emerging Technologies Research Center, XPANCEO  Dubai UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dmitry I.","family":"Yakubovsky","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow 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V.","family":"Melentev","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Zhukova","sequence":"additional","affiliation":[{"name":"Moscow Center for Advanced Studies  Moscow Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Davit A.","family":"Ghazaryan","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Functional Materials Yerevan State University  Yerevan Armenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6664-7881","authenticated-orcid":false,"given":"Gleb","family":"Tselikov","sequence":"additional","affiliation":[{"name":"Emerging Technologies Research Center, XPANCEO  Dubai 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