White　organic　light-emitting　diodes　(WOLED)　are　usually　fabricated　with　the　high-cost　vacuum　evaporation　method.　Although　low-cost　solution　method　can　also　be　adopted　in　WOLED,　it　usually　requires　multiple　interconnecting　layers　and　complicates　the　manufacturing　process.　In　this　study,　a　white　polymer/quantum-dot　composite　light-emitting　diode　with　a　simple　structure　was　fabricated　through　solution　process,　in　which　the　issue　of　interlayer　dissolution　is　effectively　avoided.　The　electroluminescence　spectrum　of　this　device　is　close　to　standard　white　light,　with　1931　Commission　International　de　I＇Eclairage　(CIE)　chromaticity　coordinates　of　(0.3249,　0.3317),　and　a　maximum　brightness　of　15856.9　cd/m2.　©　2021　Elsevier　B.V.