{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T06:34:15Z","timestamp":1792996455043,"version":"4.5.0"},"reference-count":78,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:00:00Z","timestamp":1792627200000},"content-version":"vor","delay-in-days":21,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Lead\u2010free halide double perovskites, including Cs\n                    <jats:sub>2<\/jats:sub>\n                    NaInCl\n                    <jats:sub>6<\/jats:sub>\n                    , its lanthanide\u2010doped derivatives (Cs\n                    <jats:sub>2<\/jats:sub>\n                    NaLnCl\n                    <jats:sub>6<\/jats:sub>\n                    ) and Cs\n                    <jats:sub>2<\/jats:sub>\n                    AgInCl\n                    <jats:sub>6<\/jats:sub>\n                    , have emerged as promising environmentally friendly materials for next\u2010generation optoelectronic applications. These materials exhibit attractive optical properties arising from self\u2010trapped excitons and lanthanide ion emissions. Consequently, they can produce light over a broad spectral range of 400\u20132000\u2009nm and exhibit enhanced photoluminescence quantum yields (PLQYs) in optimized doped systems. Their emission colour can also be tuned from warm to cool white by incorporating dopants such as Na\n                    <jats:sup>+<\/jats:sup>\n                    , Bi\n                    <jats:sup>3+<\/jats:sup>\n                    and other lanthanide ions. Despite these advantages, significant challenges remain in achieving large\u2010scale synthesis and precise control over the incorporation of multiple lanthanide ions, both of which are essential for practical applications in lighting, sensors, photocatalysis and X\u2010ray detection while ensuring long\u2010term stability and environmental safety. This review provides a comprehensive overview of the synthesis methods, crystal structures, optical properties, emission tuning mechanisms and emerging applications of Cs\n                    <jats:sub>2<\/jats:sub>\n                    NaInCl\n                    <jats:sub>6<\/jats:sub>\n                    , Cs\n                    <jats:sub>2<\/jats:sub>\n                    NaLnCl\n                    <jats:sub>6<\/jats:sub>\n                    and Cs\n                    <jats:sub>2<\/jats:sub>\n                    AgInCl\n                    <jats:sub>6<\/jats:sub>\n                    . It also summarizes recent advances, discusses the key challenges and outlines future research directions for the development of practical lead\u2010free double\u2010perovskite phosphors.\n                  <\/jats:p>","DOI":"10.1002\/bio.70654","type":"journal-article","created":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T03:01:06Z","timestamp":1792724466000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Lead\u2010Free Halide Double Perovskites: A Review of Recent Advances in Synthesis, Optical Properties and Applications"],"prefix":"10.1002","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-0035-7042","authenticated-orcid":false,"given":"Rashmi V.","family":"Pandey","sequence":"first","affiliation":[{"name":"Department of Physics Saint Francis De Sales College, Seminary Hills  Nagpur Maharashtra India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1659-9567","authenticated-orcid":false,"given":"Halim S.","family":"Ahamad","sequence":"additional","affiliation":[{"name":"Department of Physics Saint Francis De Sales College, Seminary Hills  Nagpur Maharashtra India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. S.","family":"Meshram","sequence":"additional","affiliation":[{"name":"Department of Physics Gondwana University  Gadchiroli Maharashtra India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Supriya","family":"Kshetrapal","sequence":"additional","affiliation":[{"name":"Department of Physics S.F.S. College, Sadar  Nagpur Maharashtra India"},{"name":"Department of Physics Anand Niketan College of Science, Arts &amp; Commerce, Warora (Affiliated to Gondwana University, Gadchiroli)  Warora India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6081-7616","authenticated-orcid":false,"given":"Nilesh","family":"Ugemuge","sequence":"additional","affiliation":[{"name":"Department of Physics Anand Niketan College of Science, Arts &amp; Commerce, Warora (Affiliated to Gondwana University, Gadchiroli)  Warora India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9444-3077","authenticated-orcid":false,"given":"K. G.","family":"Rewatkar","sequence":"additional","affiliation":[{"name":"Vidya Vikas College  Samudrapur Wardha 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