World's Best Scientists 2026 revealed!

D-Index & Metrics

Materials Science

D-Index
59
Citations
22392
World Ranking
7231
National Ranking
1791

Engineering and Technology

D-Index
59
Citations
22494
World Ranking
2279
National Ranking
712

Overview

Oki Gunawan is affiliated with IBM in the United States and has contributed extensively to the fields of engineering and materials science. Their research is primarily concentrated in electrical and electronic engineering, alongside significant work in materials chemistry, atomic and molecular physics, and optics. They have also engaged in studies related to electronic, optical, and magnetic materials as well as global and planetary change.

The scientist has published a number of papers across various respected venues, reflecting a broad scope of interests. Recent publications include:

  • "p-Type molecular doping by charge transfer in halide perovskite," 2021, Materials Advances
  • "2X reduction of STT-MRAM switching current using double spin-torque magnetic tunnel junction," 2021, 2021 IEEE International Electron Devices Meeting (IEDM)
  • "Reliable Sub-Nanosecond Switching in Magnetic Tunnel Junctions for MRAM Applications," 2022, IEEE Transactions on Electron Devices
  • "From Amorphous to Polycrystalline Rubrene: Charge Transport in Organic Semiconductors Paralleled with Silicon," 2022, Advanced Functional Materials
  • "Next-generation geospatial-temporal information technologies for disaster management," 2020, IBM Journal of Research and Development

Frequent publication venues include:

  • Advanced Materials
  • Proceedings of the International Conference on Hybrid and Organic Photovoltaics
  • arXiv (Cornell University)
  • Materials Advances
  • 2021 IEEE International Electron Devices Meeting (IEDM)

Oki Gunawan's research covers several specialized topics, notably:

  • Chalcogenide Semiconductor Thin Films
  • Magneto-Optical Properties and Applications
  • Quantum Dots Synthesis And Properties
  • Magnetic properties of thin films
  • Perovskite Materials and Applications
  • Advanced Memory and Neural Computing
  • Copper-based nanomaterials and applications

Their work frequently intersects with a number of collaborators, with the most frequent co-authors being Julie Euvrard, Antoine Kahn, David B. Mitzi, G. Hu, and J. Z. Sun.

Best Publications

  • Device Characteristics of CZTSSe Thin‐Film Solar Cells with 12.6% Efficiency

    Wei Wang;Mark T. Winkler;Oki Gunawan;Tayfun Gokmen

  • The path towards a high-performance solution-processed kesterite solar cell ☆

    David B. Mitzi;Oki Gunawan;Teodor K. Todorov;Kejia Wang

  • Thin film solar cell with 8.4% power conversion efficiency using an earth‐abundant Cu2ZnSnS4 absorber

    Byungha Shin;Oki Gunawan;Yu Zhu;Nestor A. Bojarczuk

  • Beyond 11% Efficiency: Characteristics of State‐of‐the‐Art Cu2ZnSn(S,Se)4 Solar Cells

    Teodor K. Todorov;Jiang Tang;Santanu Bag;Oki Gunawan

  • Device characteristics of a 10.1% hydrazine-processed Cu2ZnSn(Se,S)4 solar cell

    D. Aaron R. Barkhouse;Oki Gunawan;Tayfun Gokmen;Teodor K. Todorov

  • Thermally evaporated Cu2ZnSnS4 solar cells

    K. Wang;O. Gunawan;T. Todorov;B. Shin

  • Band tailing and efficiency limitation in kesterite solar cells

    Tayfun Gokmen;Oki Gunawan;Teodor K. Todorov;David B. Mitzi

  • A High Efficiency Electrodeposited Cu2ZnSnS4 Solar Cell

    Shafaat Ahmed;Kathleen B. Reuter;Oki Gunawan;Lian Guo

  • Cu2ZnSnSe4 Thin‐Film Solar Cells by Thermal Co‐evaporation with 11.6% Efficiency and Improved Minority Carrier Diffusion Length

    Yun Seog Lee;Talia Gershon;Oki Gunawan;Teodor K. Todorov

  • Loss mechanisms in hydrazine-processed Cu2ZnSn(Se,S)4 solar cells

    Oki Gunawan;Teodor K. Todorov;David B. Mitzi

  • High Efficiency Cu2ZnSn(S,Se)4 Solar Cells by Applying a Double In2S3/CdS Emitter

    Jeehwan Kim;Homare Hiroi;Teodor K. Todorov;Oki Gunawan

  • Solution‐processed Cu(In,Ga)(S,Se)2 absorber yielding a 15.2% efficient solar cell

    Teodor K. Todorov;Oki Gunawan;Tayfun Gokmen;David B. Mitzi

  • Flexible CIGS, CdTe and a-Si:H based thin film solar cells: A review

    Jeyakumar Ramanujam;Jeyakumar Ramanujam;Douglas M. Bishop;Teodor K. Todorov;Oki Gunawan

  • Thin-Film Deposition and Characterization of a Sn-Deficient Perovskite Derivative Cs2SnI6

    Bayrammurad Saparov;Jon-Paul Sun;Weiwei Meng;Zewen Xiao

  • Low band gap liquid-processed CZTSe solar cell with 10.1% efficiency

    Santanu Bag;Oki Gunawan;Tayfun Gokmen;Yu Zhu

  • Valley susceptibility of an interacting two-dimensional electron system.

    O. Gunawan;Y. P. Shkolnikov;K. Vakili;T. Gokmen

  • Band alignment at the Cu2ZnSn(SxSe1−x)4/CdS interface

    Richard Haight;Aaron Barkhouse;Oki Gunawan;Byungha Shin

  • Optical designs that improve the efficiency of Cu2ZnSn(S,Se)4 solar cells

    Mark T. Winkler;Wei Wang;Oki Gunawan;Harold J. Hovel

  • Photovoltaic Materials and Devices Based on the Alloyed Kesterite Absorber (AgxCu1–x)2ZnSnSe4

    Talia Gershon;Yun Seog Lee;Priscilla Antunez;Ravin Mankad

  • Monolithic Perovskite‐CIGS Tandem Solar Cells via In Situ Band Gap Engineering

    Teodor Todorov;Talia Gershon;Oki Gunawan;Yun Seog Lee

Frequent Co-Authors

David B. Mitzi
David B. Mitzi Duke University
Supratik Guha
Supratik Guha Argonne National Laboratory
Emanuel Tutuc
Emanuel Tutuc The University of Texas at Austin
Lydia Helena Wong
Lydia Helena Wong Nanyang Technological University
Jeffrey W. Sleight
Jeffrey W. Sleight IBM (United States)
Devendra K. Sadana
Devendra K. Sadana IBM (United States)
Matthew Copel
Matthew Copel IBM (United States)
Qing Cao
Qing Cao IBM (United States)
Andrew J. Kellock
Andrew J. Kellock IBM (United States)

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