As the increasing of concentration , the host and guest interconverted , and the more the charge been transferred , the more the total energy decreased . finally , we deduce that the doping of rubrene in pvk just acting as traps in electroluminescent devices , and its trapping electrons arrested many cavities in pvk . and so , more pvk who did n ' t transport energy was concerned with trop and it makes less pvk was concerned with energy transfer in photoluminescent devices than in electroluminescent devices 基于光致发光和电致发光中pvk与rubrene发光强度的不同，我们对低掺杂时的电致发光和光致发光进行了比较，并提出：在电致发光中， rubrene的掺入在pvk链间相当于陷阱，其陷阱电子对pvk空穴的吸引，使一部分在光致发光中不参与能量传递的pvk参与了这种陷阱作用，使得在电致发光中不参与能量传递的pvk可能比光致发光中少。
