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Portrait of Hemant Verma

Hemant Verma, Ph.D.

Computational Materials Physicist 

Ph.D. in Physics · National Taiwan University & Academia Sinica · Taipei, Taiwan

First-principles physicist working on carrier dynamics, interfaces, and quantum transport in emerging materials — combining large-scale DFT and electron–phonon calculations with automated Python workflows, tested against experiment.

6
Peer-reviewed papers
3
Manuscripts under review
3
Conference presentations
2
Courses taught
Latest

News & Highlights

Recent publications, awards, and conference activity.

Aug 2026

🎓 Successfully defended my Ph.D. in Physics at National Taiwan University (TIGP, Academia Sinica), advised by Prof. Chao-Cheng Kaun.

2026

📄 First-author paper published: Anisotropic hot carrier relaxation mediated by electron–phonon scattering in TiN thin films, Surfaces and Interfaces 97, 110258. Read it ↗

Jun 2026

🎤 Gave an oral presentation at the 24th Workshop on First-Principles Computational Materials Physics, Tainan, Taiwan.

2026

Three manuscripts under review, spanning layered-perovskite doping, lithium–sulfur battery membranes, and continuous-flow perovskite quantum dot synthesis.

Spring 2026

👩‍🏫 Taught as TA for Modern Physics Laboratory at National Taiwan University, after Quantum Mechanics at Academia Sinica in Fall 2025.

Oct 2025

Presented poster P-196 at the 26th Asian Workshop on First-Principles Electronic Structure Calculations (ASIAN-26), Tsukuba, Japan.

2025

🏆 Received the Best Paper Award from the Center for Theoretical Physics, National Taiwan University.

2025

Two papers published in Nano Energy on perovskite quantum-dot inks and Li+ transport in solid-state battery electrolytes.

What I work on

Research Interests

Connecting atomistic first-principles physics to measurable material behaviour.

Carrier Dynamics & Electron–Phonon Coupling

Ab-initio scattering rates and hot-carrier lifetimes, validated against ultrafast pump–probe spectroscopy.

Result: anisotropic hot-carrier relaxation in TiN thin films

Quantum Transport & Interfaces

DFT+NEGF simulations of van der Waals contacts and field-effect device geometries.

Focus: contact resistance, transmission, and band alignment

Emerging Materials

Transition metal nitrides, layered and quantum-dot perovskites, 2D heterostructures, and solid-state battery interfaces.

Including semiconductor-to-half-metal tuning in (BA)2PbBr4

Computational Workflows & HPC

Automated Python pipelines for large-scale DFT campaigns on national supercomputing facilities.

VASP · Quantum ESPRESSO · JDFTx · EPW · Wannier90

Open source

Software & Tools

Research software I build and maintain.

Drude

Open-source scientific data analysis & plotting

An open-source desktop application for analyzing measurement data — including J–V curves and routine solar-cell characterisation — producing fast, reproducible, publication-quality figures without writing code. Sole developer.

Desktop App Python Windows Data Viz
Selected work

Publications

Peer-reviewed articles and manuscripts in progress. Filter by year below.

2026

6.

Anisotropic hot carrier relaxation mediated by electron–phonon scattering in TiN thin films

Hemant Verma, Tzu-Yu Peng, Shyr-Shyan Yeh, Sheng-Chieh Huang, Pritam Sardar, Yang-Hao Chan*, Yu-Jung Lu*, Chao-Cheng Kaun*

Surfaces and Interfaces 2026, 97, 110258. DOI ↗ arXiv ↗

2025

5.

Probing Interfacial Chemistry of Functionalized Ceramic Nanoparticles to Optimize Li+ Pathways in Polymer Electrolytes for Solid-State Lithium Metal Batteries

P. Srivastava, B. Bazri, Y.-T. Hung, Hemant Verma, C.-Y. Cheng, S.-M. Huang, Y.-T. Wu, D.-H. Wei*, C.-C. Kaun*, R.-S. Liu*

Nano Energy 2025, 146, 111559. DOI ↗

4.

High-Efficiency and Ultrastable Solvent-Free Curable Perovskite Quantum Dot Inks for MicroLED and LED Backlighting Applications

L. T. Ngo, Y.-T. Huang, C.-C. Chang, Hemant Verma, Y.-H. Lin, C.-T. Kuo, Y.-C. Liao, C.-C. Kaun*, R.-J. Chung*, R.-S. Liu*

Nano Energy 2025, 142, 111230. DOI ↗

2024

3.

Hybrid-Protected Perovskite Quantum Dot Films with Ultra-High Efficiency and Stability for LED Backlighting

Loan Thi Ngo, Wen-Tse Huang, Hemant Verma, Yen-Huei Lin, Ling-Wei Liang, Chia-Te Fang, Jia-Cheng Chang, Wen-Chung Chu, Chaochin Su*, Chao-Cheng Kaun*, and Ru-Shi Liu*

ACS Applied Materials & Interfaces 2024, 16 (48), 66262–66272. DOI ↗

2.

Cascaded-Type Band Alignment of a WBG Perovskite/NBG Perovskite for Heterostructure Solar Cells

Anjali Thakran, Anisha Mohapatra, Hemant Verma, Mario Hofmann, Zeeshan Alam Ansari, Chintam Hanmandlu, Chung Hsin Lu, and Chih Wei Chu*

ACS Applied Energy Materials 2024, 7 (8), 3039–3048. DOI ↗

2021

1.

Enhanced Photocatalytic Activity in Strain Engineered Janus WSSe Monolayers

Hemant Verma, Abhijeet J. Kale, Chandra Prakash, Moussab Harb, Ambesh Dixit*

Journal of Electronic Materials 2021, 50, 7230–7239. DOI ↗

Book Chapter

Design and Simulation of Perovskite Solar Cells: A Numerical Approach Towards Device Structure Optimization

C. Guru Santosh, Hemant Verma, S. S. Singh, T. G. Kanakadas, S. B. Lekshmi, A. Mohapatra, M. L. Meena

In H. P. Dasari, C. S. Rao, V. Nair (eds.), Proceedings of the 1st National Conference on Climate Resilience and Environmentally Sustainable Technologies (NITK-CREST 2025), Proceedings in Technology Transfer, Springer, Singapore, 2026, 133–142. DOI ↗

Manuscripts Under Review / Submitted

Electronic and Optical Responses in (BA)2PbBr4 Layered Perovskites through 3d Transition Metal Doping from First Principles

Hemant Verma, S.-C. Huang, C.-C. Kaun*

Under revision, Surfaces and Interfaces (2026).

Synergistic Adsorption and Catalysis of Lithium Polysulfides using a Bilayer Membrane Enables Long-Life Lithium–Sulfur Batteries

S. A. Abbas, Hemant Verma, A. Muhammad, M. Mushtaq, C.-C. Kaun, T. Kennedy*

Submitted, Journal of Energy Storage (2026).

Continuous-Flow Synthesis of High-Efficiency Perovskite Quantum Dots for Broad Optoelectronic Applications

Y.-T. Huang, Y.-H. Lin, X. Shang, Hemant Verma, Y.-Y. Chou, C.-C. Chen, K.-L. Liang, S.-C. Huang, X. Chen, C.-C. Kaun, D.-H. Wei, R.-S. Liu

Under revision, Nano Energy (2026). Preprint: SSRN 7067984 ↗

* Corresponding author

Background

Curriculum Vitae

Education, research experience, skills, and recognitions.

Hemant Verma

Hemant Verma, Ph.D.

Computational Materials Physicist

Verma0001@as.edu.tw

+886-908363245

  Download CV (PDF)

Research Profile

First-principles physicist working on carrier dynamics, interfaces, and quantum transport in emerging materials. Six peer-reviewed papers, three more under review, spanning transition metal nitrides, layered and quantum dot perovskites, two-dimensional heterostructures, and solid-state battery interfaces. Combines large-scale DFT and electron–phonon calculations with automated Python workflows, and works directly with experimental groups to test predictions against ultrafast spectroscopy and device data.

Education

Ph.D. in Physics

National Taiwan University, Taiwan

Taiwan International Graduate Program (TIGP), Academia Sinica – Nano Science and Technology · CGPA: 3.94/4.3

Advisor: Prof. Chao-Cheng Kaun (RCAS, Academia Sinica) · Oral defense: 4 August 2026

2021–2026

M.Sc. in Physics

Indian Institute of Technology (IIT) Jodhpur, India

CGPA: 8.14/10

2019–2021

B.Sc. in Physics

Maharaja College, University of Rajasthan, Jaipur, India

2016–2019

Research Experience

Doctoral Researcher

Research Center for Applied Sciences (RCAS), Academia Sinica

Advisor: Prof. Chao-Cheng Kaun

2021–2026

  • Showed that hot carrier relaxation in TiN thin films is anisotropic, using ab-initio electron–phonon calculations (JDFTx, Quantum ESPRESSO, EPW, Wannier90) to obtain carrier lifetimes and transport coefficients, validated against ultrafast pump–probe spectroscopy. First-author paper in Surfaces and Interfaces.
  • Mapped the semiconductor-to-half-metal transition and optical response of 3d transition-metal doped (BA)2PbBr4 layered perovskites. First-author manuscript under revision.
  • Ran DFT+NEGF quantum transport simulations of strain-engineered van der Waals contacts and field-effect device geometries.
  • Supplied the first-principles side of five experimental collaborations, covering surface passivation, ligand binding, and interfacial Li+ transport in perovskite quantum dot films, curable QD inks, and solid-state lithium batteries.
  • Wrote automated Python workflows for VASP and Quantum ESPRESSO covering job setup, post-processing, and figure generation.

M.Sc. Thesis Researcher – Strain-Induced Band Engineering in 2D Semiconductors

Department of Physics, IIT Jodhpur

2019–2021

  • Predicted enhanced photocatalytic activity in strain-engineered Janus WSSe monolayers using DFT, published as first author in Journal of Electronic Materials.
  • Fabricated and optimized organo-halide perovskite thin films for solar cells.

Teaching Experience

Teaching Assistant, Modern Physics Laboratory

Department of Physics, National Taiwan University

Feb–Jun 2026

  • Ran the experimental laboratory sessions, guiding students through measurement setup, data collection, and error analysis.
  • Marked lab reports and gave written feedback on experimental method and interpretation.

Teaching Assistant, Quantum Mechanics

Institute of Physics, Academia Sinica

TIGP Nano Science and Technology Program

Sep–Dec 2025

  • Built and maintained the course website hosting lecture notes, problem sets, and announcements.
  • Set and graded weekly problem sets, and ran discussion sessions on formalism and problem solving.

Technical Skills

First-Principles Codes

VASP, Quantum ESPRESSO, JDFTx, EPW, Wannier90, NanoDCAL

Methods

DFT, GW, ab-initio electron–phonon coupling, Boltzmann transport, DFT+NEGF quantum transport, machine-learning interatomic potentials

Programming

Python (NumPy, Pandas, Matplotlib, ASE), Bash, Git, automated simulation workflows, Python package development

HPC

PBS and Slurm scripting, parallel computing on national supercomputing facilities

Visualization

VESTA, XCrySDen, Matplotlib

Experimental

Perovskite solar cell fabrication (spin and spray coating) in nitrogen glovebox, transfer printing, physical vapor deposition, XPS, UPS, XRD, TEM, SEM, PL

Honors & Awards

Best Paper Award

Center for Theoretical Physics, National Taiwan University

2025

Swami Vivekananda Scholarship for Academic Excellence

Govt. of Rajasthan, India

2023

TIGP Fellowship

Nano Science and Technology Program, Academia Sinica

2021

INSPIRE Scholarship

Department of Science and Technology, Govt. of India

2016

Conferences, Summer Schools & Workshops

24th Workshop on First-Principles Computational Materials Physics

Tainan, Taiwan

Oral presentation: "First-Principles Insights into Interfacial Engineering for Energy Materials" · Financial support: NCTS

Jun 2026

26th Asian Workshop on First-Principles Electronic Structure Calculations (ASIAN-26)

Tsukuba International Congress Center, Japan

Poster P-196: "Orientation-Dependent Hot Carrier Relaxation in TiN Thin Films Facilitated by Electron–Phonon Scattering" · Financial support: NCTS

Oct 2025

Taiwan Physical Society Annual Meeting

National Sun Yat-sen University, Kaohsiung, Taiwan

Poster: "Impact of Crystal Orientation on Hot Carrier Lifetimes in Titanium Nitride" · Financial support: Academia Sinica

Jan 2025

Summer School on First-Principles Computational Materials – Advanced Level

National Tsing Hua University (NTHU), Hsinchu, Taiwan

Financial support: NCTS

2024

22nd Workshop on First-Principles Computational Materials Physics

Tainan, Taiwan

Financial support: NCTS

Aug 2024

Professional Service

Section Editor

Indonesian Physical Review

2025–Present

Mentorship

Supervised interns and master's students in computational and experimental projects.

In the classroom

Teaching

Courses I teach and the resources I build for students.

Quantum Mechanics I — Fall 2025

Phys8067 · 114-1 · TIGP, Academia Sinica

Course hub for the Fall 2025 offering of introductory graduate quantum mechanics (TIGP) that I supported as teaching assistant — syllabus and weekly topics, homework, lecture notes, reference books, and a student results portal. Kept online as a reference for anyone who wants to revisit the material.

Quantum Mechanics Phys8067 Fall 2025 Teaching Assistant
hemant0723.github.io/Quantum-Mechanics/

Live preview of the Fall 2025 course hub — scroll and click inside, or open it full-screen.

Learn

Tutorials

Notes and walkthroughs on scientific computing tools.

Python Basics

Introduction to Python

Learn the basics of Python programming, including syntax, data types, and control structures.

Python Programming
View Tutorial

To be continued...

MATLAB Basics

Introduction to MATLAB

Get started with MATLAB, covering basic operations, plotting, and scripting.

MATLAB Engineering
View Tutorial

To be continued...

Say hello

Contact

Happy to discuss research, collaborations, or opportunities.

Verma0001@as.edu.tw

Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan

(+886) 908 363 245

National Taiwan University (TIGP) · Academia Sinica (RCAS)

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