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With an active - layer comprising a multifluorophoric conjugated copolymer ( MCP ) and an electrolyte designed to inhibit MCP energy - transfer interactions during LEC operation , we are able to demonstrate LECs that emit broad - band white light with a color rendering index of 82 , a correlated - color temperature of 4000 K , and a current conversion efficacy of 3 . 8 cd / A .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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