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Name:Huanghe

Degree:PhD

Graduate School:

Email:hh@suda.edu.cn

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Overview

Prof. He Huang, male, birth in Linyi, Shandong, China.

I have published 31 peer-reviewed research articles, 14 articles as the first or corresponding author. The papers have been cited >4100 times, according to Google Scholar with an h-index of 24. Six of them have been rated as highly cited in Web of Science. Research articles of the firstor corresponding author have been published in high impact factor journals such as Nature Communications, 3 Angewandte Chemie International Edition, Advanced Science, ACS Energy Letters, Chem Mater, NPG Asia Materials and so on with three papers cited over 300 times. For example, I first reported quantum size effect of hybrid perovskite and also reported first waterproof treatment of perovskite nanocrystals, which were cited 388 and 332 times, respectively.

I started my research career in 2011. Since then, I have acquired knowledge on various aspects of science and management for the past nine years. During the Master training, I acquired several synthetic methods such as wet chemistry, hydrothermal, CVD etc. I also learned the operation of equipment such as TEM, SEM, AFM, XRD, Raman, FTIR etc. I have experience with device fabrications of solar cells, supercapacitors and Li-ion batteries. During my PhD training, I joined Prof. A. L. Rogach's group, one of the world-leading groups in semiconductor NCs(City University of Hong Kong, Hong Kong) where I acquired experience in the synthesis, optical properties and applications of perovskites. For instance, I have developed two new synthetic methods to obtain perovskite NCs and to develop a coating process to achieve water stable perovskites. I have vast experience in collaborating with other group members and researchers in other groups. Later I joined Prof. Jochen Feldmann's chair (LMU Munich, Germany), one of the world-leading groups in understanding the optical properties of semiconductor NCs. I further developed my skill for the synthesis of material and learned a fundamental understanding of NCs by time-resolved spectroscopy. I am also getting training on my independence such as publishing as only corresponding author paper.



Education

2017–2014                                   PhD in theDepartment of Physics and Material Science, City University of Hong Kong, Hong Kong, China

Title: Lead Halide Perovskite Nanocrystals: Synthesis, Post-Preparative Treatment, Optical Studies, and Use for Light Emitting Devices

PhD Supervisor: Prof. Dr. Andrey L. Rogach

 

2014-2011                                     Master in theDepartment of Environmental Engineering, Shanghai University, Shanghai, China

Supervisor: Prof. Minghong Wu, Prof. Dengyu Pan

 

2011-2007                                     Bachelor inDepartment of Environmental Engineering, Chang’an University, Xi’an, China


Professional Experiences

From 02.2018 to 03.2021 

Marie Curie Fellow (Postdoc) in the Chair for Photonics and Optoelectronics, LMU Munich, Germany 

Mentor:Prof. Dr. Jochen Feldmann

From 09.2017 to 01.2018 

Postdoctoral Researcher City University of Hong Kong, Hong Kong, China


Professional Service

Journal Referee for: Nature Commun, Adv Mater, ACS Nano, Chem Mater, ACS Applied Nano Materials, Langmuir, Inorganic Chemistry


Research

During my research life, I have been working on a few specific points of perovskite nanocrystals. I have put them into four different categories and I put the research output in the form of publications at the beginning and provide details of my research afterwards.

 

1.     The fundamental understanding of hybrid CH3NH3(FA)PbBr3 perovskite nanocrystals such as size effect, growth mechanism and propose new synthetic method.

 

Publications:

H. Huang, A. S. Susha, S. V. Kershaw, T. F. Hung, A. L. Rogach (2015): Control of Emission Color of High Quantum Yield CH3NH3PbBr3 Perovskite Quantum Dots by Precipitation Temperature, Adv. Sci., 2, 1500194 (ISI highly cited paper, top 1%)

And

Follow-up paper: H. Huang, J. Raith, S. V. Kershaw, S. Kalytchuk, O. Tomanec, L. Jing, A. S. Susha, R. Zboril, A. L. Rogach *, Synthesis of Strongly Emitting CH3NH3PbBr3 Perovskite Nanocrystals with a Tunable Band Gap: Effect of Temperature, Precursor and Ligand Concentration and the Related Growth Mechanism, Nature Commun., 8, 996

Follow-up paper 2: H. Huang*, Y. Li, Y. Tong, E.P. Yao, M. Döblinger, M.W. Feil, A.F. Richter, A.L. Rogach, J. Feldmann, L. Polavarapu*, Spontaneous Crystallization of Perovskite Nanocrystals in Nonpolar Organic Solvents: A Versatile Approach for their Shape-controlled Synthesis. Angew. Chem. Int. Ed. 2019, 58(46), 16558-16562

 

 [We have shown the first demonstration of a size-tuned bandgap in CH3NH3PbBr3 perovskite nanocrystals(NCs) by using temperature to control a facile re-precipitation technique. The emission peak range of the NCs obtained is 475-520 nm. The PL of the NCs is characterized by narrow emission line widths of 28−36 nm, and an outstandingly high absolute QY of 74% to 93%. The latter is a consequence of the relatively short radiative lifetimes of 13−27 ns in comparison with non-radiative lifetimes of 100 ns and longer. These very high quantum yield perovskite nanoparticles offer outstanding potential for optoelectronic applications.

In the follow-up paper, we further examine the synthetic parameter and study the reaction mechanism of CH3NH3PbBr3 NCs. By combining the experimental results with the principles of nucleation/growth models. The proposed formation mechanism of perovskite NCs would be helpful for further studies in this field and could be used as a guide to improve the synthetic methods in the future.

In the second follow-up paper, we report on the spontaneous crystallization of perovskite NCs in nonpolar organic media at ambient conditions by simple mixing of precursor–ligand complexes without application of any external stimuli. The shape of the NCs can be controlled from nanocubes to nanoplatelets by varying the ratio of monovalent (eg formamidinium+(FA+) and Cs+) to divalent (Pb2+) cation–ligand complexes. The precursor–ligand complexes are stable for months, and thus perovskite NCs can be readily prepared prior to use. Moreover, we show that this versatile synthetic process is scalable and generally applicable for perovskite NCs of different compositions.]

 

2.     First report about top-down method to achieve perovskite nanocrystals.

 

Publication:

H. Huang, Q. Xue, B. Chen, Y. Xiong, J. Schneider, C. Zhi, H. Zhong, A. L. Rogach*. Top-Down Fabrication of Stable Methylammonium Lead Halide Perovskite Nanocrystals Employing a Mixture of Ligands as Coordinating Solvents. Angew. Chem. Int. Ed., 2017, 56 (32), 9571 –9576

 

 [We demonstrate a top-down method for the fabrication of perovskite NCs, employing a mixture of ligands oleic acid and oleylamine as coordinating solvents. Our approach avoids the use of any polar solvents, skips multiple reaction steps by employing a simple ultrasonic treatment of the perovskite precursors, and yields rather monodisperse blue, green, and red-emitting methylammonium lead halide NCs with a high photoluminescence quantum yield and remarkably improved stability.]

 

3.     The fundamental understanding of CsPbBr3 perovskite nanocrystals for growth mechanism by ex situ and in situ methods.

 

Publications:

Y. Li, H. Huang *, Y. Xiong, S. V. Kershaw, A. L. Rogach*. Revealing the formation mechanism of CsPbBr3 perovskite nanocrystals produced via a slowed-down microwave assisted synthesis. Angew. Chem. Int. Ed. 2018, 57(20), 5833-5837

Follow-up paper: H. Huang*, M. W. Feil, S. Fuchs, T. Debnath, A. F. Richter, Y. Tong, L. Wu, Y. Wang, M. Döblinger, and B. Nickel, Growth of Perovskite CsPbBr3 Nanocrystals and Their Formed Super-structures Revealed by In-situ Spectroscopy, Chem. Mater. 2020, 32, 8877-8884 (Highlight as cover paper)

 

[We developed a microwave-assisted slowed-down synthesis of CsPbBr3 perovskite NCs, which retards the reaction and allows us to gather useful insights into the formation mechanism of these nanoparticles. By examining the intermediate stages of their growth, we proposed the possible growth model for CsPbBr3 NCs: first the formation of a bromoplumbate ionic scaffold, with Cs-ion infilling lagging a little behind.

In the follow-up paper, we further examine the formation process of CsPbBr3. we point out different phenomena during the processes of growth, cooling, and purification of high-quality CsPbBr3 nanocrystals using in situ photoluminescence spectroscopy. The as-synthesized materials have been further characterized by time-resolved transient differential transmission and photoluminescence spectroscopies. Using X-ray scattering, we confirm that nanocrystals form superstructures during the process of cooling already in dispersion, which is frequently ignored. The purification process is explained using a proposed model based on the self-size-selection.]

 

4.     First demonstration of waterproof coating for perovskite nanocrystals.

 

Publication:

H. Huang, B. Chen, Z. Wang, T. F. Hung, A. S. Susha, H. Zhong, A. L. Rogach (2016): Water Resistant CsPbX3 Nanocrystals Coated with Polyhedral Oligomeric Silsesquioxane and Their Use as Solid State Luminophores in All-perovskite White Light-emitting Devices. Chem. Sci., 7, 5699-5703 (ISI highly cited paper, top 1%)

 

[We present an approach towards stable solid-state perovskite-based luminophores with different emission colors via surface protection of CsPbX3 (X = Br or I) NCs with a polyhedral oligomeric silsesquioxane (POSS). Such surface passivation results in water-resistant perovskite NC powders (for the first time) and prevents otherwise easy anion exchange between perovskite NCs of a different composition mixed together in the solid-state, which allows us to preserve their distinct emission spectra. We subsequently used mixtures of green-emitting POSS-CsPbBr3 and red-emitting POSS-CsPb(Br/I)3 NC powders to fabricate single layer all-perovskite down conversion white light-emitting devices.]


Professional Service

Journal Referee for: Nature Commun, Adv Mater, ACS Nano, Chem Mater, ACS Applied Nano Materials, Langmuir, Inorganic Chemistry


Teaching

Projects

After I join Soochow University:

1. The startup funding from Soochow University.

2. National Natural Science Funds of China

3. Major research projects of basic science (natural science) in universities in Jiangsu Province

 During my PhD and postdoc:

1. The European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 839042.

Total amount: 174806,40 Euros.

2. The Seed funding from CeNS LMU Munich, 10,600 Euros.

I have also participated in the funding of Prof. Rogach and I also contributed to the proposal writing.

3. Research Grant Council of Hong Kong S.A.R. Grant Number: CityU11337616

4. National Natural Science Foundation of China / Research Grants Council Joint Research Scheme. Grant Number: N_CityU108/17









Publications

  • 1、Growth Mechanism of Strongly Emitting CH3NH3PbBr3 Perovskite Nanocrystals with a Tunable Band Gap,Nat. Commun.,SCIE,2017,H. Huang,J. Raith,S. V. Kershaw,A. L. Rogach,1

  • 2、Spontaneous Crystallization of Perovskite Nanocrystals in Nonpolar Organic Solvents: A Versatile Approach for their Shape-controlled Synthesis,Angew. Chem. Int. Ed.,SCIE,2019,H. Huang,Y. Li,Y. Tong, H. Huang, L. Polavarapu,1

  • 3、Revealing the formation mechanism of CsPbBr3 perovskite nanocrystals produced via a slowed-down microwave assisted synthesis,Angew. Chem. Int. Ed.,SCIE,2018,Y. Li,H. Huang,Y. Xiong,H. Huang, A. L. Rogach,2

  • 4、Top-Down Fabrication of Stable Methylammonium Lead Halide Perovskite Nanocrystals Employing a Mixture of Ligands as Coordinating Solvents,Angew. Chem. Int. Ed.,SCIE,2017,H. Huang,Q. Xue,B. Chen,A. L. Rogach,1

  • 5、Advances in metal halide perovskite nanocrystals: Synthetic strategies, growth mechanisms, and optoelectronic applications,Mater. Today,SCIE,2020,Y. Li,X. Zhang,H. Huang,H. Huang, A. L. Rogach,3

  • 6、Lead Halide Perovskite Nanocrystals in the Research Spotlight: Stability and Defect Tolerance,ACS Energy Lett.,SCIE,2017,H. Huang,M. I. Bodnarchuk,S. V. Kershaw,M. V. Kovalenko, A. L. Rogach,1

  • 7、Growth of Perovskite CsPbBr3 Nanocrystals and Their Formed Superstructures Revealed by In-situ Spectroscopy,Chem. Mater.,SCIE,2020,H. Huang,Maximilian W. Feil,Simon Fuchs,H. Huang,1

  • 8、Water Resistant CsPbX3 Nanocrystals Coated with Polyhedral Oligomeric Silsesquioxane and Their Use as Solid State Luminophores in All-Perovskite White Light-Emitting Devices,Chem. Sci.,SCIE,2016,H. Huang,B. Chen,Z. Wang,A. L. Rogach,1

  • 9、Colloidal Lead Halide Perovskite Nanocrystals: Synthesis, Optical Properties and Applications,NPG Asia Mater.,SCIE,2016,H. Huang,L. Polavarapu,J. A. Sichert,A. L. Rogach,1

  • 10、Excitons and Biexciton Dynamics in Single CsPbBr3 Perovskite Quantum Dots,J. Phys. Chem. Lett.,SCIE,2018,B. Li,H. Huang,G. Zhang,G. Zhang, S. Jia,2

  • 11、Polyhedral Oligomeric Silsesquioxane Enhances the Brightness of Perovskite Nanocrystal-Based Green Light-Emitting Devices,J. Phys. Chem. Lett.,SCIE,2016,H. Huang,H. Lin,S. V. Kershaw,W. C. Choy, A. L. Rogach,1

  • 12、Facile Synthesis of FAPbI3 Nanorods,Nanomaterials.,SCIE,2020,H. Huang,L. Wu,Y. Wang,H. Huang, J. Feldmann,1

  • 13、Reversible transformation between CsPbBr3 and Cs4PbBr6 nanocrystals,CrystEngComm,SCIE,2018,Y. Li,H. Huang,Y. Xiong,H. Huang, A. L. Rogach,2

  • 14、Enhancing the brightness of cesium lead halide perovskite nanocrystal based green light-emitting devices through the interface engineering with perfluorinated ionomer,Nano Lett.,SCIE,2016,X. Zhang,H. Lin,H. Huang,W. C. Choy, A. L. Rogach,3

  • 15、Neutral and Charged Exciton Fine Structure in Single Lead Halide Perovskite Nanocrystals Revealed by Magneto-optical Spectroscopy,Nano Lett.,SCIE,2017,M. Fu,P. Tamarat,H. Huang,B. Lounis,3


Books&Patents

Books Patents

Honors

Supervision

After I join Soochow University:

Supervised 3 master students


During my PhD and postdoc:

2017-2021

Supervised a few students in LMU Munich who have got a good score in the thesis, one of them published a paper in Chem Mater as 2nd author where I am the first author.

Co-supervised a PhD student in CityU HK and published three papers in Angew Chem, Mater Today and CrystEngCommn. I am one of the corresponding authors.

2014-2017

Supervised one undergraduate exchange student of LMU. Part of his undergraduate work was published in Nature Commun. as the second author and I am the first author.

Supervised a few master students who have got a good score in Master Thesis.