PV Cell Developments

Explore technology introductions and maturity by decade alongside representative PV cell records grouped into five-year efficiency periods.

PV technology introduction timeline

Select a decade to view the photovoltaic technologies introduced or actively maturing during that period and their indicative Technology Readiness Level (TRL).

Selected decade

1950s

TRL 1–3 Research TRL 4–6 Validation TRL 7–8 Demonstration TRL 9 Operational

Loading the 1950s technology maturity snapshot.

How to read this: ratings are indicative editorial assessments of the demonstrated photovoltaic system in that decade, mapped to the NASA 1–9 TRL framework. They are not formal certifications, and technical readiness does not by itself measure cost, manufacturing scale or market adoption. TRL definitions.

PV cell efficiency development graph

The highest-efficiency record for every technology and subtype in each five-year period.

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Loading records

Pre-1976 points are curated from the historical literature and retain their original test-condition caveats; they are not presented as modern independently certified records.

Preparing five-year representative records.