Research trend share of papers by universities & colleges in North America, per year

Each point is this institution's share of the papers credited to universities & colleges in North America that year, with credit split across co-authoring institutions. A share, not a count, because our collection grows unevenly by year. Hover a point for the figures. The hollow point is the year in progress.

Where it works most top research communities, by papers

• Thin-Film Photovoltaics: CdTe, CIGS, and Kesterite Absorbers #2 of 544 universities & colleges in North America · 188 papers
• Transparent Oxide Thin Films and Organic Photovoltaic Devices #3 of 614 universities & colleges in North America · 140 papers
• Rare-Earth-Doped Phosphors and Upconversion Nanoparticles for Lighting, Sensing, and Optoelectronics #2 of 698 universities & colleges in North America · 108 papers
• Ion Channel Physiology and Calcium Signaling in Cellular Disease #104 of 1,157 universities & colleges in North America · 94 papers
• Silicon and III-V Semiconductor Devices for Photovoltaics and Optoelectronics #35 of 698 universities & colleges in North America · 94 papers

Check communities to show the trend above for them only. Positions are by fractional papers across all years. A community page ranks its institutions by citation-weighted credit, so its order can differ.

Covers the materials and chemistry research Elements Live tracks, not everything Instituto Politécnico Nacional publishes. Institutions come from OpenAlex affiliations, rolled up to the parent organisation. Older papers often lack affiliations, so earlier years undercount.