title: Charge transport dependent high open circuit voltage tandem organic photovoltaic cells with low temperature deposited HATCN-based charge recombination layers.
abstract: Mechanisms of charge transport between the interconnector and its neighboring layers in tandem organic photovoltaic cells have been systematically investigated by studying electronic properties of the involving interfaces with photoelectron spectroscopies and performance of the corresponding devices. The results show that charge recombination occurs at HATCN and its neighboring hole transport layers which can be deposited at low temperature. The hole transport layer plays an equal role to the interconnector itself. These insights provide guidance for the identification of new materials and the device architecture for high performance devices.
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China. jxtang@suda.edu.cn.
authors.forename: Huai-Xin
authors.initials: HX
authors.lastname: Wei
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk.
authors.forename: Feng-Shuo
authors.initials: FS
authors.lastname: Zu
authors.affiliation: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China. jxtang@suda.edu.cn.
authors.forename: Yan-Qing
authors.initials: YQ
authors.lastname: Li
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk.
authors.forename: Wen-Cheng
authors.initials: WC
authors.lastname: Chen
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk.
authors.forename: Yi
authors.initials: Y
authors.lastname: Yuan
authors.affiliation: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China. jxtang@suda.edu.cn.
authors.forename: Jian-Xin
authors.initials: JX
authors.lastname: Tang
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk.
authors.forename: Man-Keung
authors.initials: MK
authors.lastname: Fung
authors.affiliation: Center Of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China. apcslee@cityu.edu.hk.
authors.forename: Chun-Sing
authors.initials: CS
authors.lastname: Lee
authors.affiliation: Department of Energy and Materials Engineering, Dongguk University, Seoul, Republic of Korea. yynoh@dongguk.edu.
authors.forename: Yong-Young
authors.initials: YY
authors.lastname: Noh