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Topic · Renewable Energy, Sustainability and the Environment

TiO2 Photocatalysis and Solar Cells

TiO2 Photocatalysis and Solar Cells is a research topic within Renewable Energy, Sustainability and the Environment. Science Explorer counts 48k research works in it since 1958. 9.8% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the advances in photocatalysis and solar energy conversion, with a specific emphasis on titanium dioxide nanomaterials, visible light photocatalysis, dye-sensitized solar cells, and water splitting. The research covers topics such as enhancing solar absorption, surface science studies, molecular engineering of sensitizers, and the development of efficient panchromatic sensitizers for solar cells.

  • Photocatalysis
  • Solar Cells
  • Titanium Dioxide
  • Nanomaterials
  • Visible Light
  • Dye-Sensitized
  • Water Splitting
  • Nanostructures
  • Efficiency
  • Semiconductor Nanocrystals
Research works
48k
fractional, since 1958
In the world top 10%
4.7k
per year above
Top-10% rate
9.8%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+7%
the tick is no change
Largest producer
China
48% of the 10 largest, 2022-now
TiO2 Photocatalysis and Solar Cells

Which countries lead TiO2 Photocatalysis and Solar Cells research?

By volume, China and India publish the most (3.7k and 1.6k works in 2022-now).

By volume, 2022-now

  1. 1 China 3.7k works
  2. 2 India 1.6k works
  3. 3 United States 403 works
  4. 4 Iran 392 works
  5. 5 Saudi Arabia 348 works
  6. 6 South Korea 342 works
  7. 7 Indonesia 300 works
  8. 8 Japan 285 works
  9. 9 Türkiye 232 works
  10. 10 Brazil 223 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 47.6%India: 20.3%United States: 5.1%Iran: 5.0%6 others listed: 22.0%48%largest
China3,744 · 47.6%India1,601 · 20.3%United States403 · 5.1%Iran392 · 5.0%6 others listed1,728 · 22.0%

Shares of the rows listed above, not of the whole node.

Which institutions lead TiO2 Photocatalysis and Solar Cells research?

By volume in 2022-now, Chinese Academy of Sciences publishes the most TiO2 Photocatalysis and Solar Cells research, followed by Centre National de la Recherche Scientifique and Russian Academy of Sciences.

By volume, 2022-now

  1. 1 Chinese Academy of SciencesChina 181 works
  2. 2 Centre National de la Recherche ScientifiqueFrance 101 works
  3. 3 Russian Academy of SciencesRussia 77 works
  4. 4 King Saud UniversitySaudi Arabia 64 works
  5. 5 Saveetha UniversityIndia 51 works
  6. 6 Islamic Azad University, TehranIran 42 works
  7. 7 Council of Scientific and Industrial ResearchIndia 40 works
  8. 8 Vellore Institute of Technology UniversityIndia 38 works
  9. 9 SRM Institute of Science and TechnologyIndia 38 works
  10. 10 Jiangsu UniversityChina 36 works

Who are the leading researchers in TiO2 Photocatalysis and Solar Cells?

The most-cited researchers publishing on TiO2 Photocatalysis and Solar Cells include Zhong Lin Wang, Michaël Grätzel and Yury G. Gogotsi.

  1. 1 Zhong Lin Wang United States 491k citations
  2. 2 Michaël Grätzel Switzerland 458k citations
  3. 3 Yury G. Gogotsi United States 313k citations
  4. 4 Heng Li United States 270k citations
  5. 5 Wei Huang China 267k citations
  6. 6 Yi Ping Cui United States 261k citations
  7. 7 Xiaogang Wang China 260k citations
  8. 8 Kenji Watanabe Japan 237k citations
  9. 9 Kai You Wang China 224k citations
  10. 10 Lei Jiang China 214k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in TiO2 Photocatalysis and Solar Cells?

The most cited paper in TiO2 Photocatalysis and Solar Cells is "A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films" (Brian C. O’Regan, Michaël Grätzel, 1991), with 28,576 citations. Next come "Photoelectrochemical cells" (12,688) and "Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides" (12,250).

Most cited papers
#PaperReleasedCitations
1 A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films Brian C. O’Regan, Michaël Grätzel · Nature Open access Oct 1991 28,576
2 Photoelectrochemical cells Michaël Grätzel · Nature Open access Nov 2001 12,688
3 Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides Ryoji Asahi, Takeshi Morikawa, Takeshi Ohwaki et al. · Science 13 Jul 2001 12,250
4 Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applications Xiaobo Chen, Samuel S. Mao · Chemical Reviews Review 23 Jun 2007 10,667
5 Dye-Sensitized Solar Cells Anders Hagfeldt, Gerrit K. Boschloo, Licheng Sun et al. · Chemical Reviews ReviewOpen access 10 Sep 2010 8,935
All 100 most cited papers, with filters and sorting

Where is TiO2 Photocatalysis and Solar Cells research done?

The largest centres of TiO2 Photocatalysis and Solar Cells research in 2022-now are Beijing (China), Shanghai (China), Xi'an (China) and Chennai (India).

Largest cities, 2022-now

  1. 1 BeijingChina 409 works
  2. 2 ShanghaiChina 191 works
  3. 3 Xi'anChina 175 works
  4. 4 ChennaiIndia 174 works
  5. 5 NanjingChina 173 works
  6. 6 WuhanChina 145 works
  7. 7 TehranIran 128 works
  8. 8 SeoulSouth Korea 124 works
  9. 9 RiyadhSaudi Arabia 121 works
  10. 10 TianjinChina 118 works
See TiO2 Photocatalysis and Solar Cells on the map

Where is the best place to study TiO2 Photocatalysis and Solar Cells?

Among universities, judged by research, King Saud University, National Institute Of Technology Silchar and Islamia University of Bahawalpur score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 19.77%fractional works in this field (log) →share of work in the world top 10% →Islamia University o…National Institute O…King Saud UniversityKing Khalid University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1King Saud UniversitySaudi Arabia 76.715.5%6.5×64 +98.6%
2National Institute Of Technology SilcharIndia 66.226.8%12.8×22 +137.9%
3Islamia University of BahawalpurPakistan 66.228.6%5.8×10 +351.6%
4King Khalid UniversitySaudi Arabia 63.613.1%7.8×30 +169.6%
5Yeungnam UniversitySouth Korea 63.414.7%13.9×32 +67.0%
6Saveetha UniversityIndia 62.515.6%5.2×51 -
7University of South AfricaSouth Africa 61.523.2%4.3×19 +38.9%
8Fuzhou UniversityChina 59.720.5%5.3×30 -11.9%
9Jiangsu UniversityChina 59.618.6%4.4×36 +7.5%
10City University of Hong KongChina 59.221.1%2.5×15 +32.9%

Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in TiO2 Photocatalysis and Solar Cells, country by country

Is TiO2 Photocatalysis and Solar Cells research growing?

Output in 2022-2025 was 7% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are TiO2 Photocatalysis and Solar Cells.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is TiO2 Photocatalysis and Solar Cells as a percentage of every work published that year, 0.041% in 2024.

still counting0.025%0.050%0.075%TiO2 Photocatalysis and Solar Cells0.051% in 202519801990200020102020

Fractional works of TiO2 Photocatalysis and Solar Cells over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%TiO2 Photocatalysis and Solar Cells9.7% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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