biostudies-literatureUnknown16(1)Li JBlackbody-sensitive room-temperature photodetectors with ultrabroadband response from the short to very long-wave infrared (VLWIR) range are highly desirable for optical communication, industrial gas leakage detection, night vision, and atmosphere surveillance. Although two-dimensional (2D) semiconductors with narrow bandgaps have shown promise in uncooled short and mid-wave infrared (SWIR and MWIR) detection, achieving blackbody responses extending to long-wave infrared (LWIR) or even the VLWIR region at room temperature remains a challenge. Here, we report a bioinspired room-temperature blackbody-sensitive self-adapted ultrabroadband detector utilizing the 2D flat-band quantum material Nb₃I₈, engineered through an electronic and phononic band strategy. Our study revNature communications8904https://www.ebi.ac.uk/biostudies/studies/S-EPMC12504747biostudies-literatureFlat-band quantum materials empowering self-adapted ultrabroadband detectors.PMC12504747Martyniuk PMi JLi JChen JHu WRogalski AWang FLi QWang HHe RZhou XLi LHu CLiu ZZhan MWang PGe XZhong FXu XWang ZXu ZfalseFlat-band quantum materials empowering self-adapted ultrabroadband detectors.Blackbody-sensitive room-temperature photodetectors with ultrabroadband response from the short to very long-wave infrared (VLWIR) range are highly desirable for optical communication, industrial gas leakage detection, night vision, and atmosphere surveillance. Although two-dimensional (2D) semiconductors with narrow bandgaps have shown promise in uncooled short and mid-wave infrared (SWIR and MWIR) detection, achieving blackbody responses extending to long-wave infrared (LWIR) or even the VLWIR region at room temperature remains a challenge. Here, we report a bioinspired room-temperature blackbody-sensitive self-adapted ultrabroadband detector utilizing the 2D flat-band quantum material Nb₃I₈, engineered through an electronic and phononic band strategy. Our study rev2025-01-01T00:00:00Z2025 Oct2026-06-04T06:29:10.575Z2026-06-01T03:06:35.537ZS-EPMC125047474105734110.1038/s41467-025-63983-1