title: Tunable Excitonic Processes at Organic Heterojunctions.
abstract: Nonradiative Auger recombination and radiative exciplex emissions at organic-organic heterojunctions are found to be mediated by the nature of the majority charge carrier. The Auger recombination is dominant when the heterojunction is electron rich, the exciplex emission is dominant when the heterojunction is hole rich, and both Auger recombination and exciplex emission are present when the heterojunction is charge balanced.
authors.affiliation: Department of Physics, Yunnan University, Kunming, Yunnan, 650091, China.|Yunnan Key Laboratory for Micro/Nano Materials and Technology, Yunnan University, Kunming, Yunnan, 650091, China.
authors.forename: Shou-Jie
authors.initials: SJ
authors.lastname: He
authors.affiliation: Department of Physics, Yunnan University, Kunming, Yunnan, 650091, China.|Yunnan Key Laboratory for Micro/Nano Materials and Technology, Yunnan University, Kunming, Yunnan, 650091, China.
authors.forename: Deng-Ke
authors.initials: DK
authors.lastname: Wang
authors.affiliation: Department of Physics, Yunnan University, Kunming, Yunnan, 650091, China.|Yunnan Key Laboratory for Micro/Nano Materials and Technology, Yunnan University, Kunming, Yunnan, 650091, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Jiang
authors.affiliation: Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5E2, Canada.
authors.forename: John S
authors.initials: JS
authors.lastname: Tse
authors.affiliation: Department of Physics, Yunnan University, Kunming, Yunnan, 650091, China.|Yunnan Key Laboratory for Micro/Nano Materials and Technology, Yunnan University, Kunming, Yunnan, 650091, China.|Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario, M5S 3E4, Canada.
authors.forename: Zheng-Hong
authors.initials: ZH
authors.lastname: Lu
keywords: Auger recombination; charge transfer exciton; exciplex emissions; organic heterojunctions; organic light-emitting diodes