This investigation explores the impact of the accretion of electrons on the dust particles through quantum tunneling on the charging of the dust particles in dark complex plasmas. With deference to the openness nature of complex plasmas, this analysis is based on the charge balance over dust particles and numberenergy balance of electrons and ionic species. An expression for the mean energy associated with electrons, accreting through quantum tunneling has been derived and used in the kinetics. The difference between the predictions of the present analysis and the semi classical treatment has been graphically illustrated. It is seen that the electron accretion through tunneling appreciably affects the charging of the dust particles, and the mechanism is important for small radius (～ 10 nm) and number density (≤10 ~3 cm ~(-3)) of the dust particles and high electron densitytemperature.
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