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Researcher · Tokyo Institute of Technology · Japan

Hiroyuki Hirayama

Hiroyuki Hirayama publishes mostly in Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry, on topics such as Surface and Thin Film Phenomena, Semiconductor materials and interfaces and Silicon and Solar Cell Technologies.

ORCID 0000-0003-4036-5402 OpenAlex
World rank
#872,666
of 1,633,909 ranked researchers
Rank in Japan
#44,034
of 114,622
Works
125
Citations
174
Citations per work
1.4

What does Hiroyuki Hirayama research?

Atomic and Molecular Physics, and Optics: 46.8%Electrical and Electronic Engineering: 15.2%Materials Chemistry: 11.8%Surfaces, Coatings and Films: 6.3%other fields: 19.9%47%top field
Atomic and Molecular Physics, and Optics46.8%Electrical and Electronic Engineering15.2%Materials Chemistry11.8%Surfaces, Coatings and Films6.3%other fields19.9%

Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.

  1. 1Atomic and Molecular Physics, and Optics47% of their works
  2. 2Electrical and Electronic Engineering15% of their works
  3. 3Materials Chemistry12% of their works
  4. 4Surfaces, Coatings and Films6% of their works
  5. 5Biomedical Engineering4% of their works
  6. 6Structural Biology2% of their works

Research topics

Which keywords describe Hiroyuki Hirayama's research?

The keywords of their largest research topics: Quantum Size Effects, Superconductivity, Solar Cells, Metal-Semiconductor Contacts, Schottky Barrier, Photovoltaics, Efficiency and Scanning Electron Microscopy.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 18 words, with their numbers
  1. Quantum Size Effects401 topic
  2. Superconductivity401 topic
  3. Solar Cells352 topics
  4. Metal-Semiconductor Contacts241 topic
  5. Schottky Barrier241 topic
  6. Photovoltaics202 topics
  7. Efficiency111 topic
  8. Scanning Electron Microscopy111 topic
  9. Silicon111 topic
  10. X-ray Photoelectron Spectroscopy111 topic
  11. Atomic Layer Deposition101 topic
  12. High-k Dielectrics101 topic
  13. Density Functional Theory91 topic
  14. Dispersion Correction91 topic
  15. Quantum Dots91 topic
  16. Semiconductor91 topic
  17. Semiconductor Quantum Dots81 topic
  18. Spintronics81 topic

Where does Hiroyuki Hirayama work?

Hiroyuki Hirayama's main affiliation in the publication record is Tokyo Institute of Technology, Japan.

How many publications and citations does Hiroyuki Hirayama have?

Science Explorer counts 125 works and 174 citations for Hiroyuki Hirayama, ranking #872,666 of 1,633,909 researchers worldwide on the composite score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Other researchers named Hiroyuki Hirayama

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