Single-component　white-light　materials　have　received　much　attention　due　to　the　rise　of　white　light　emitting　diodes　(WLEDs).　Inorganic-organic　hybrid　metal　halides　(IOMHs)　are　considered　excellent　candidates　for　single-component　white-light　materials　due　to　their　rich　structural　tunability　and　excellent　photoluminescence　properties.　Here,　we　put　forward　a　strategy　to　realize　effective　single-component　white-light　emission,　that　is,　incorporating　a　bipyididyl-type　emissive　ligand　into　the　anionic　halometallic　unit　of　an　ionic　zero-dimensional　(0-D)　IOMH.　As　demonstated　by　the　construction　of　a　0-D　In(iii)-based　IOMH,　namely　[Ammim][InCl4(dmbp)]　(Ammim　=　1-allyl-2,3-dimethylimidazolium,　dmbp　=　4,4′-dimethyl-2,2′-bipyridyl),　after　partially　replacing　the　chlorine　atoms　in　the　chloroindate　unit　with　a　dmbp　ligand,　the　resultant　compound　exhibits　broadband　white　light　emission　under　UV　excitation　with　a　photoluminescence　quantum　yield　(PLQY)　of　16.70%　and　a　color　rendering　index　(CRI)　of　93.2.　Systematic　studies　demonstrate　that　the　source　of　white　light　is　the　charge　transfer　from　the　inorganic　part　to　the　bipyididyl-type　ligand.　Our　work　provides　a　new　path　for　designing　single-component　white-light　materials　with　superior　photophysical　properties.　©　2024　The　Royal　Society　of　Chemistry.