{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T01:15:21Z","timestamp":1792199721858,"version":"4.4.0"},"reference-count":32,"publisher":"Wiley","issue":"43","license":[{"start":{"date-parts":[[2018,9,14]],"date-time":"2018-09-14T00:00:00Z","timestamp":1536883200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"published-print":{"date-parts":[[2018,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Halide perovskites, including CsPbX<jats:sub>3<\/jats:sub> (X = Cl, Br, I), have gained much attention in the field of optoelectronics. However, the toxicity of Pb and the low photoluminescence quantum yield (PLQY) of these perovskites hamper their use. In this work, new halide materials that meet the requirements of: (i) nontoxicity, (ii) high PLQY, and (iii) ease of fabrication of thin films via the solution process are explored. In particular, copper(I) halide compounds with low\u2010dimensional electronic structures are considered. Cs<jats:sub>3<\/jats:sub>Cu<jats:sub>2<\/jats:sub>I<jats:sub>5<\/jats:sub> has a 0D photoactive site and exhibits blue emission (\u2248445 nm) with very high PLQYs of \u224890 and \u224860% for single crystals and thin films, respectively. The large exciton binding energy of \u2248490 meV explains well the 0D electronic nature of Cs<jats:sub>3<\/jats:sub>Cu<jats:sub>2<\/jats:sub>I<jats:sub>5<\/jats:sub>. Blue electroluminescence of Pb\u2010free halides is demonstrated using solution\u2010derived Cs<jats:sub>3<\/jats:sub>Cu<jats:sub>2<\/jats:sub>I<jats:sub>5<\/jats:sub> thin films.<\/jats:p>","DOI":"10.1002\/adma.201804547","type":"journal-article","created":{"date-parts":[[2018,9,16]],"date-time":"2018-09-16T01:01:20Z","timestamp":1537059680000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":761,"title":["Lead\u2010Free Highly Efficient Blue\u2010Emitting Cs<sub>3<\/sub>Cu<sub>2<\/sub>I<sub>5<\/sub> with 0D Electronic Structure"],"prefix":"10.1002","volume":"30","author":[{"given":"Taehwan","family":"Jun","sequence":"first","affiliation":[{"name":"Institute of Innovative Research Tokyo Institute of Technology  4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kihyung","family":"Sim","sequence":"additional","affiliation":[{"name":"Institute of Innovative Research Tokyo Institute of Technology  4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soshi","family":"Iimura","sequence":"additional","affiliation":[{"name":"Institute of Innovative Research Tokyo Institute of Technology  4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masato","family":"Sasase","sequence":"additional","affiliation":[{"name":"Materials Research Center for Element Strategy Tokyo Institute of Technology  Mailbox SE\u20101, 4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hayato","family":"Kamioka","sequence":"additional","affiliation":[{"name":"Department of Physics College of Humanities and Sciences Nihon University  3\u201025\u201040 Sakurajyousui Setagaya\u2010ku Tokyo 156\u20108550 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9168-6260","authenticated-orcid":false,"given":"Junghwan","family":"Kim","sequence":"additional","affiliation":[{"name":"Materials Research Center for Element Strategy Tokyo Institute of Technology  Mailbox SE\u20101, 4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideo","family":"Hosono","sequence":"additional","affiliation":[{"name":"Institute of Innovative Research Tokyo Institute of Technology  4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 Japan"},{"name":"Materials Research Center for Element Strategy Tokyo Institute of Technology  Mailbox SE\u20101, 4259 Nagatsuta Midori\u2010ku Yokohama 226\u20108503 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