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Qiwei Han
Researcher at Duke University
Publications - 16
Citations - 1517
Qiwei Han is an academic researcher from Duke University. The author has contributed to research in topics: Perovskite (structure) & Carbon nanotube. The author has an hindex of 13, co-authored 16 publications receiving 1046 citations. Previous affiliations of Qiwei Han include Chinese Academy of Sciences & Center for Excellence in Education.
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Journal ArticleDOI
Two-Dimensional Lead(II) Halide-Based Hybrid Perovskites Templated by Acene Alkylamines: Crystal Structures, Optical Properties, and Piezoelectricity.
TL;DR: Examination of the impact of organic cation and inorganic layer choice on the exciton absorption/emission properties, among the set of compounds considered, reveals that perovskite layer distortion has a more global effect on theexciton properties than octahedral distortion.
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Thermodynamically Stable Orthorhombic γ-CsPbI3 Thin Films for High-Performance Photovoltaics
Boya Zhao,Boya Zhao,Shifeng Jin,Sheng Huang,Ning Liu,Jingyuan Ma,Ding-Jiang Xue,Qiwei Han,Jie Ding,Qian-Qing Ge,Yaqing Feng,Jin-Song Hu +11 more
TL;DR: This study provides a novel and fundamental perspective to overcome the Achilles' heel of the inorganic lead iodide perovskite and opens it up for high-performance optoelectronic devices.
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Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes
Qiwei Han,Yusong Bai,Jie Liu,Jie Liu,Ke-Zhao Du,Tianyang Li,Dong Ji,Yihao Zhou,Changyong Cao,Donghyeop Shin,Jie Ding,Aaron D. Franklin,Jeffrey T. Glass,Jin-Song Hu,Michael J. Therien,David B. Mitzi +15 more
TL;DR: An additive-based room-temperature process for realizing high-quality methylammonium lead iodide films with micron-sized grains (>2 μm) and microsecond-range carrier lifetimes was reported in this article.
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Hierarchical NiCo2O4 nanosheets/nitrogen doped graphene/carbon nanotube film with ultrahigh capacitance and long cycle stability as a flexible binder-free electrode for supercapacitors
Shihong Yue,Hao Tong,Liang Lu,Weiwei Tang,Wenlong Bai,Fengqiao Jin,Qiwei Han,Jianping He,Jie Liu,Xiaogang Zhang +9 more
TL;DR: In this article, a hierarchical structure of free-standing, binder-free electrodes of corrugated NiCo2O4 nanosheets on nitrogen doped graphene/carbon nanotubes (NGN/CNTs) film has been designed for use in high-performance supercapacitors.
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Fully Air-Bladed High-Efficiency Perovskite Photovoltaics
Jie Ding,Qiwei Han,Qiwei Han,Qian-Qing Ge,Ding-Jiang Xue,Jingyuan Ma,Boya Zhao,Yao-Xuan Chen,Jie Liu,David B. Mitzi,Jin-Song Hu +10 more
TL;DR: In this article, an air-blading process is demonstrated to assemble the entire perovskite photovoltaics completely free from the spin-coating techniques, leading to highly uniform films.