Zero-dimensional　(0D)　organic-inorganic　hybrid　materials　have　attracted　extensive　attention　due　to　their　facile　preparation　and　excellent　optical　characteristics.　However,　achieving　superior　photophysical　properties　and　excellent　stability　is　still　desirable　for　their　practical　application.　Sb(III)-based　metal　halides　owning　5　S2　lone-pair　are　prone　to　form　deformable　building　units,　which　is　beneficial　for　efficient　self-trapped　excitons　(STE)　emission.　Herein,　a　0D　Sb(III)-based　metal　halides　DIPA2SbCl5　(DIPA+　=　4-amino-3,5-diiodopyridin-1-ium)　was　obtained　by　solvothermal　method　at　room　temperature,　which　exhibited　highly　efficient　broadband　emission　at　652　nm　with　a　photoluminescence　quantum　yield　(PLQY)　of　87.1%　and　outstanding　stability　against　moisture.　Then,　a　white-light-emitting　diode　(WLED)　was　fabricated　by　mixing　DIPA2SbCl5　with　green　phosphor　((Sr,　Ba)2SiO4:　Eu2+)　and　blue　phosphor　(BaMgAl10O17:Eu2+),　with　the　CIE　coordinates　of　(0.351,　0.371),　a　correlated　color　temperature　of　4183　K　and　a　color　rendering　index　of　93.3.　This　work　provides　a　universal　solution　to　obtain　hybrid　materials　with　efficient　luminescence　properties　and　potential　applications.　©　2023