Bright　red　emission　(620-650　nm)　from　perovskite　light-emitting　diodes　(PeLEDs)　is　usually　achieved　via　a　composition　including　both　bromine　and　iodine　anions,　which　results　in　poor　performance　and　stability　due　to　phase　separation　under　operating　conditions.　Here　a　large-scale　ligand-assisted　reprecipitation　method　is　devised　with　nonpolar　solvent　that　enables　the　fabrication　of　CsPbI(3)nanowire　clusters,　emitting　at　600　nm.　The　blue-shift　of　this　emission　relative　to　that　of　bulk　CsPbI3(approximate　to　700　nm)　is　attributed　to　quantum　confinement　in　nanowires.　The　growth　of　the　nanowires　is　along　the　[011]　crystal　direction　and　is　vacancy　driven,　resulting　in　the　healing　of　surface　defects　and　thereby　a　high　photoluminescence　quantum　yield　of　91%.　The　clusters　with　ultralow　trap　density　show　remarkable　structural　and　environmental　stability.　PeLEDs　based　on　these　clusters　exhibit　an　external　quantum　efficiency　of　6.2%　with　Commission　Internationale　de　l＇Eclairage　coordinates　of　(0.66,　0.34),　and　record　luminance　of　13　644　cd　m(-2)of　red　electroluminescence.　The　half-lifetime　under　an　accelerated　stability　test　is　13.5　min　for　an　unencapsulated　device　in　ambient　conditions　operating　at　an　initial　luminance　of　11　500　cd　m(-2),　which　corresponds　to　an　estimated　half-lifetime　of　694　h　at　100　cd　m(-2)based　on　acceleration　factor　obtained　by　experimental　testing.