J
Jonathan E. Halpert
Researcher at Hong Kong University of Science and Technology
Publications - 88
Citations - 8342
Jonathan E. Halpert is an academic researcher from Hong Kong University of Science and Technology. The author has contributed to research in topics: Quantum dot & Perovskite (structure). The author has an hindex of 29, co-authored 76 publications receiving 7170 citations. Previous affiliations of Jonathan E. Halpert include MacDiarmid Institute for Advanced Materials and Nanotechnology & Victoria University of Wellington.
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Recent advances in micro-/nano-structured hollow spheres for energy applications: From simple to complex systems
TL;DR: In this article, the authors show that complex multi-shelled micro-nano-materials show significant material advantages in many applications over conventional simple hollow structures, and discuss the possible application of these novel materials for power generation and storage.
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Colloidal quantum--dot light-emitting diodes with metal-oxide charge transport layers
TL;DR: In this article, the use of sputtered, amorphous inorganic semiconductors as robust charge transport layers and demonstrate devices capable of operating at current densities exceeding 3.5 cm−2 with peak brightness of 1,950 cm−m−2 and maximum external electroluminescence efficiency of nearly 0.1%, which represents a 100-fold improvement over previously reported structures.
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Quantum Dot Light-Emitting Devices with Electroluminescence Tunable over the Entire Visible Spectrum
TL;DR: It is demonstrated that different color QD-LEDs with QDs of different chemistry can be fabricated on the same substrate by printing close-packed monolayers of different QD types inside an identical QD -LED structure.
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Hot-carrier cooling and photoinduced refractive index changes in organic-inorganic lead halide perovskites.
Michael Price,Justinas Butkus,Tom C. Jellicoe,Aditya Sadhanala,Anouk Briane,Jonathan E. Halpert,Katharina Broch,Justin M. Hodgkiss,Richard H. Friend,Felix Deschler +9 more
TL;DR: In this paper, transient absorption spectroscopy was used to study hot-carrier distributions in CH3NH3PbI3 and quantify key semiconductor parameters, and the authors determined a small effective mass of mr=0.14 mo.
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Accurate control of multishelled ZnO hollow microspheres for dye-sensitized solar cells with high efficiency
Zhenghong Dong,Xiaoyong Lai,Jonathan E. Halpert,Nailiang Yang,Luoxin Yi,Jin Zhai,Dan Wang,Zhiyong Tang,Lei Jiang +8 more
TL;DR: A series of multishelled ZnO hollow microspheres with controlled shell number and inter-shell spacing have been successfully prepared by a simple carbonaceous microsphere templating method, whose large surface area and complex mult ishelled hollow structure enable them to load sufficient dyes and multi-reflect the light for enhancing light harvesting.