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The Emitter Controls Its Own Crystal Phase
An X-type quasi-2D perovskite reached 21.9 percent external quantum efficiency in a vacuum-deposited LED.
Summary
An X-type quasi-2D perovskite reached 21.9 percent external quantum efficiency in a vacuum-deposited LED.
Seoul National University and Cambridge researchers designed spacer molecules and a lithium-fluoride hetero-scaffold that steer perovskite crystallization during vacuum deposition. The resulting films exceeded 85 percent photoluminescence quantum yield, while devices reached 21.9 percent external quantum efficiency with a 16.8-nanometer emission linewidth. The team also fabricated large-area, flexible, and patterned samples. These are laboratory device metrics, not manufacturing yield, lifetime, or a commercial display.
Why it matters
An X-type quasi-2D perovskite reached 21.9 percent external quantum efficiency in a vacuum-deposited LED.
Limits and context
- These are laboratory device metrics, not manufacturing yield, lifetime, or a commercial display.
Key claims
An X-type quasi-2D perovskite reached 21.9 percent external quantum efficiency in a vacuum-deposited LED.
Qualification: These are laboratory device metrics, not manufacturing yield, lifetime, or a commercial display.
Evidence: source-2026-07-19-015
Sources
- Seoul National University via EurekAlert: X-type vapor-deposited PeLEDSeoul National University via EurekAlert · official announcement
Corrections
No corrections have been recorded for this story.