205833
Rubrene is used as a sensitiser in chemoluminescence and as a yellow light source in lightstick s. Electronic properties As an organic semiconductor , the major application of rubrene is in organic light-emitting diode s ( OLEDs ) and organic field-effect transistor s , which are the core elements of flexible displays .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None