Wu, C.-C.C.-C.WuCHUNG-CHIH WULin, Y.-T.Y.-T.LinYu, H.-L.H.-L.YuHsu, J.-H.J.-H.HsuTIEN-YAU LUH2018-09-102018-09-10200100036951http://www.scopus.com/inward/record.url?eid=2-s2.0-0001386718&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/292460https://www.scopus.com/inward/record.uri?eid=2-s2.0-0001386718&doi=10.1063%2f1.1414305&partnerID=40&md5=0b7a3f60d4ca8d1d996ac0338c6204c1In this letter, we report a promising type of electrically programmable, i.e., reconfigurable, organic light-emitting devices (OLEDs) incorporating a thin carrier-blocking layer as the sacrificial fusing layer. In such devices, the carrier-blocking layer has a lower glass transition temperature than neighboring layers. By raising the internal temperature of the device above the transition temperature of the carrier-blocking layer with a large enough current, interdiffusion between organic layers could occur through such a layer. As a consequence, neighboring layers are fused and a new path for carrier transport is formed, bypassing the carrier-blocking property and altering the device characteristics. A device that emits blue light as fabricated but can be transformed into a green-emitting one is demonstrated. Such a type of device may be used for color pixels in OLED displays, user-programmable OLED applications, and nonvolatile memory devices. © 2001 American Institute of Physics.[SDGs]SDG7journal article10.1063/1.14143052-s2.0-0001386718WOS:000171896600003