L
Lazaro A. Padilha
Researcher at State University of Campinas
Publications - 167
Citations - 6110
Lazaro A. Padilha is an academic researcher from State University of Campinas. The author has contributed to research in topics: Quantum dot & Two-photon absorption. The author has an hindex of 44, co-authored 156 publications receiving 5357 citations. Previous affiliations of Lazaro A. Padilha include University of Central Florida & University of Washington.
Papers
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Journal ArticleDOI
Controlling the influence of Auger recombination on the performance of quantum-dot light-emitting diodes
Wan Ki Bae,Young-Shin Park,Jaehoon Lim,Donggu Lee,Lazaro A. Padilha,Lazaro A. Padilha,Hunter McDaniel,Istvan Robel,Changhee Lee,Jeffrey M. Pietryga,Victor I. Klimov +10 more
TL;DR: This work finds that because of significant charging of quantum dots with extra electrons, Auger recombination greatly impacts both LED efficiency and the onset of efficiency roll-off at high currents, and demonstrates two specific approaches using heterostructured quantum dots.
Journal ArticleDOI
Controlled alloying of the core-shell interface in CdSe/CdS quantum dots for suppression of Auger recombination.
Wan Ki Bae,Lazaro A. Padilha,Young-Shin Park,Hunter McDaniel,Istvan Robel,Jeffrey M. Pietryga,Victor I. Klimov +6 more
TL;DR: Results provide direct evidence that the structure of the QD interface has a significant effect on the rate of nonradiative Auger recombination, which dominates biexciton decay.
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Amine‐Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light‐Emitting Diodes
Emre Yassitepe,Emre Yassitepe,Zhenyu Yang,Oleksandr Voznyy,Younghoon Kim,Grant Walters,Juan A. Castañeda,Pongsakorn Kanjanaboos,Mingjian Yuan,Xiwen Gong,Fengjia Fan,Jun Pan,Sjoerd Hoogland,Riccardo Comin,Osman M. Bakr,Lazaro A. Padilha,Ana Flávia Nogueira,Edward H. Sargent +17 more
TL;DR: In this paper, a new synthetic method is reported that enhances the colloidal stability of PQDs by capping them solely using oleic acid (OA) Quaternary alkylammonium halides are used as precursors, eliminating the need for oleylamine.
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Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine.
Wan Ki Bae,Jin Joo,Lazaro A. Padilha,Jonghan Won,Doh C. Lee,Qianglu Lin,Weon-kyu Koh,Hongmei Luo,Victor I. Klimov,Jeffrey M. Pietryga +9 more
TL;DR: A simple method to enhance the stability of PbSe NQDs against oxidation and to improve their optical properties through reaction with molecular chlorine is presented, which is a practical protocol for facilitating advances over the full range of optoelectronic applications.
Journal ArticleDOI
Extended Squaraine Dyes with Large Two-Photon Absorption Cross-Sections
Sung-Jae Chung,Shijun Zheng,Toru Odani,Luca Beverina,Jie Fu,Lazaro A. Padilha,Arianna Biesso,Joel M. Hales,Xiaowei Zhan,Karin Schmidt,Aijun Ye,Egbert Zojer,Stephen Barlow,David J. Hagan,Eric W. Van Stryland,Yuanping Yi,Zhigang Shuai,Giorgio A. Pagani,Jean-Luc Brédas,Joseph W. Perry,Seth R. Marder +20 more
TL;DR: Extended bis(donor)-substituted squaraine chromophores exhibit very high two-photon cross-sections (as high as 33 000 GM) in the near-IR; these can be attributed to the combination of large transition dipoles with small detuning energies.