[5] [5] So F, Kondakov D. Degradation mechanisms in small-molecule and polymer organic light-emitting diodes[J]. Adv. Mater., 2010, 22(34): 62-77.

[10] [10] Phatak R, Tsui T Y, Aziz H. Dependence of dark spot growth on cathode/organic interfacial adhesion in organic light emitting devices[J]. Journal of Applied Physics, 2012, 111(5): 054512.

[13] [13] Meyer J, Winkler T, Hamwi S. Reliable thin.lm encapsulation for organic light emitting diodes grown by low-temperature atomic layer deposition[J]. Appl. Phys. Lett., 2009, 94: 233305.

[14] [14] Kim N, Kippelen B, Graham S. A hybrid encapsulation method for organic electronics[J]. Appl. Phys. Lett., 2009, 94: 163308.

[15] [15] Ghosh A P, Jarman C M, Fornalik J E. Thin-.lm encapsulation of organic light-emitting devices[J]. Appl. Phys. Lett., 2005, 86: 223503.