{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T12:12:51Z","timestamp":1785413571798,"version":"3.56.0"},"reference-count":60,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T00:00:00Z","timestamp":1778457600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004837","name":"Ministry of Science and Innovation","doi-asserted-by":"publisher","award":["TED2021-130470B-I00"],"award-info":[{"award-number":["TED2021-130470B-I00"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004837","name":"Ministry of Science and Innovation","doi-asserted-by":"publisher","award":["PID2021-123295NB-100"],"award-info":[{"award-number":["PID2021-123295NB-100"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"award":["TED2021-130470B-I00"],"award-info":[{"award-number":["TED2021-130470B-I00"]}],"id":[{"id":"https:\/\/ror.org\/05r0vyz12","id-type":"ROR","asserted-by":"publisher"}]},{"award":["PID2021-123295NB-100"],"award-info":[{"award-number":["PID2021-123295NB-100"]}],"id":[{"id":"https:\/\/ror.org\/05r0vyz12","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This study investigates how structural dimensionality affects the optoelectronic behavior of organic lead\u2013halide hybrid perovskites. Using the chiral cation R-1-phenylethylammonium (PEA), which is known to be able to form both one-dimensional (1D) and two-dimensional (2D) lead\u2013iodide frameworks, we synthesize 1D (PEA)PbI3 and 2D (PEA)2PbI4 compounds through tailored crystallization and deposition routes. X ray diffraction confirms structural purity, while ultraviolet photoelectron spectroscopy (UPS) provides insight into the electronic structure and photoresponse. Both materials exhibit a surface photo-voltage (SPV) under visible illumination, reaching a maximum work function shift of 1.5 eV for the 2D phase and 0.4 eV for the 1D phase in the thin-film samples. These results suggest that the 1D phase exhibits a reduced tendency for iodide-vacancy formation, which may result in a more stable response under visible illumination, accompanied by faster relaxation dynamics and more anisotropic charge transport. Overall, our findings highlight the central role of electronic confinement in shaping photoinduced processes in hybrid perovskites and support the consideration of structural dimensionality as a key design parameter for the design of next-generation optoelectronic materials.<\/jats:p>","DOI":"10.3390\/ma19101990","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T15:39:32Z","timestamp":1778513972000},"page":"1990","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Impact of Structural Dimensionality on the Optoelectronic Behavior of Lead\u2013Halide Perovskites"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4483-2039","authenticated-orcid":false,"given":"Hamida","family":"Gouadria","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Instituto Madrile\u00f1o de Estudios Avanzados en Nanociencia, c\/Faraday, 9, 28049 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1102-9266","authenticated-orcid":false,"given":"Jes\u00fas","family":"\u00c1lvarez","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"F\u00edsica de Sistemas Crecidos Con Baja Dimensionalidad, Universidad Aut\u00f3noma de Madrid, Associated Unit to IEM-CSIC, DP, 28006 Madrid, Spain"},{"name":"Instituto de Ciencia de Materiales \u201cNicol\u00e1s Cabrera\u201d, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Condensed Matter Physics Center (IFIMAC), Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6576-4365","authenticated-orcid":false,"given":"Mar\u00eda Jos\u00e9","family":"Capit\u00e1n","sequence":"additional","affiliation":[{"name":"Instituto de Estructura de la Materia IEM-CSIC, c\/Serrano 121, 28006 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1126\/science.1228604","article-title":"Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites","volume":"338","author":"Lee","year":"2012","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1038\/srep00591","article-title":"Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding","volume":"2","author":"Kim","year":"2012","journal-title":"Sci. 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