Organic light-emitting device and electronic apparatus including the same

An organic light-emitting device comprising:

• a first electrode, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode,
• wherein the organic layer comprises an emission layer,
• wherein the emission layer comprises a dopant and a host, the dopant and the host are different from each other, and an amount of the dopant is equal to or greater than about 20 parts by weight based on 100 parts by weight of the emission layer, and
• [Q(t=T50)]Polaron of the organic light-emitting device is greater than 0 cm−3 and equal to or less than about 3.30×1017 cm−3,
• [Q(t=T50)]Polaron is a density of a quencher produced by a polaron in the organic light-emitting device during driving the organic light-emitting device at 500 nit at a time at which a luminance becomes 50% of an initial luminance, and
• Q(t=T50)]Polaron is calculated i) by obtaining a curve of time versus driving voltage variation by measuring driving voltage variation of the organic light-emitting device over the time (t) at which a luminance becomes 50% of the initial luminance, ii) by fitting a rate equation of quencher production from the curve of the time versus driving voltage variation, and iii) from a 0th term for a density of excitons in the rate equation of the quencher production.