Oxygen Incorporation in Rubrene Single Crystals

被引：37
作者：
Mastrogiovanni, Daniel D. T. [1 ]
Mayer, Jeff [2 ]
Wan, Alan S. [2 ]
Vishnyakov, Aleksey [3 ]
Neimark, Alexander V. [3 ]
Podzorov, Vitaly [4 ,5 ]
Feldman, Leonard C. [4 ,5 ]
Garfunkel, Eric [1 ,5 ]
机构：
[1] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA
[2] Evans Analyt Grp, East Windsor, NJ 08520 USA
[3] Rutgers State Univ, Dept Chem Engn, Piscataway, NJ 08854 USA
[4] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA
[5] Rutgers State Univ, Inst Adv Mat Devices & Nanotechnol, Piscataway, NJ 08854 USA
来源：
SCIENTIFIC REPORTS | 2014年 / 4卷
基金：
美国国家科学基金会;
关键词：
EXCITED SINGLET; MOLECULAR-OXYGEN; CHARGE MOBILITY; SURFACE; SEMICONDUCTORS; TRANSISTORS; TRANSPORT; GROWTH; WATER;
D O I：
10.1038/srep04753
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Single crystal rubrene is a model organic electronic material showing high carrier mobility and long exciton lifetime. These properties are detrimentally affected when rubrene is exposed to intense light under ambient conditions for prolonged periods of time, possibly due to oxygen up-take. Using photoelectron, scanning probe and ion-based methods, combined with an isotopic oxygen exposure, we present direct evidence of the light-induced reaction of molecular oxygen with single crystal rubrene. Without a significant exposure to light, there is no reaction of oxygen with rubrene for periods of greater than a year; the crystal's surface (and bulk) morphology and chemical composition remain essentially oxygen-free. Grand canonical Monte Carlo computations show no sorbtion of gases into the bulk of rubrene crystal. A mechanism for photo-induced oxygen inclusion is proposed.
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页数：6
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