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Nevertheless, this process has been unexplored in photodetectors (PD) because reliably quantifying the photocurrent driven by PL photons is technically challenging. This work demonstrates the generation of a PR\u2010driven photocurrent by incorporating a nickel acetate, Ni(AcO)\n                    <jats:sub>2<\/jats:sub>\n                    , nanocomposite containing MAPbBr\n                    <jats:sub>3<\/jats:sub>\n                    (MA\u00a0=\u00a0methylammonium) nanocrystals (NCs) in planar waveguide structure integrating electrode contacts. The concentration of NCs in the matrix is optimized to enable efficient PL photon confinement and propagation over millimeter\u2010scale distances until detected. Under modulated laser illumination, this mechanism enhances photocurrent by approximately 60%. Remarkably, under nanosecond pulsed excitation, the device generates an amplified spontaneous emission signal that is reabsorbed within the film, yielding a photocurrent peak of 0.8\u00a0mA per pulse. These findings demonstrate an effective strategy for enhancing the performance of MHP\u2010based PDs.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70196","type":"journal-article","created":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T07:34:53Z","timestamp":1782977693000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Photon Recycling\u2013Driven Photodetection Enhancement in Ni(AcO)\n                    <sub>2<\/sub>\n                    \u2013MAPbBr\n                    <sub>3<\/sub>\n                    Nanocomposite Waveguides"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-0284-0393","authenticated-orcid":false,"given":"Sandra","family":"Soriano\u2010D\u00edaz","sequence":"first","affiliation":[{"name":"Departamento de Ingenier\u00eda Electr\u00f3nica Escuela T\u00e9cnica Superior de Ingenier\u00eda Universidad de Valencia  Valencia Spain"},{"name":"UMDO Instituto de Ciencia de los Materiales Universidad de Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8060-4132","authenticated-orcid":false,"given":"Jaume","family":"Noguera\u2010G\u00f3mez","sequence":"additional","affiliation":[{"name":"UMDO Instituto de Ciencia de los Materiales Universidad de Valencia  Valencia Spain"},{"name":"Energy Research Institute @ NTU Nanyang Technological University Research Techno Plaza  Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8900-1098","authenticated-orcid":false,"given":"Diego","family":"Ram\u00edrez\u2010Mu\u00f1oz","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda Electr\u00f3nica Escuela T\u00e9cnica Superior de Ingenier\u00eda Universidad de Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9518-7549","authenticated-orcid":false,"given":"Pablo P.","family":"Boix","sequence":"additional","affiliation":[{"name":"Instituto de Tecnolog\u00eda Qu\u00edmica (Universitat Polit\u00e8cnica de Val\u00e8ncia\u2010 Agencia Estatal Consejo Superior de Investigaciones Cient\u00edficas)  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3683-0578","authenticated-orcid":false,"given":"Juan P.","family":"Mart\u00ednez\u2010Pastor","sequence":"additional","affiliation":[{"name":"UMDO Instituto de Ciencia de los Materiales Universidad de Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5055-6339","authenticated-orcid":false,"given":"Rafael","family":"Abargues","sequence":"additional","affiliation":[{"name":"UMDO Instituto de Ciencia de los Materiales Universidad de Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2773-8801","authenticated-orcid":false,"given":"Isaac","family":"Su\u00e1rez","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda Electr\u00f3nica Escuela T\u00e9cnica Superior de Ingenier\u00eda Universidad de Valencia  Valencia Spain"},{"name":"UMDO Instituto de Ciencia de los Materiales Universidad de Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,2]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/advs.202004076"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/adom.201701323"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.1c01186"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202405063"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jlumin.2019.116987"},{"key":"e_1_2_9_7_1","first-page":"13941","volume-title":"Research Data Supporting: \u201cEnhancing Photoluminescence Yields in Lead Halide Perovskites by Photon Recycling and Light Out\u2010Coupling\u201d","author":"Richter J. 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