electroluminescence
C2Technical/Scientific
Definition
Meaning
The emission of light from a material when an electric current or strong electric field is passed through it.
A phenomenon where a material, often a semiconductor or phosphor, produces non-thermal light in response to an alternating electric field or electrical current, commonly used in flat-panel displays, lighting, and indicator lamps.
Linguistics
Semantic Notes
Refers specifically to a physical process of converting electrical energy directly into light. Often used as a count noun for a type of device (an electroluminescence) and as a mass noun for the phenomenon itself.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Both use the same term with identical spelling.
Connotations
Technically precise in both varieties. No connotative differences.
Frequency
Equally rare in general speech in both varieties, limited to technical and engineering contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
The [material] exhibits electroluminescence.Electroluminescence from [source] was observed.Researchers studied the electroluminescence of [compound].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “(none)”
Usage
Context Usage
Business
Refers to a display technology used in manufacturing, e.g., 'Our new watch features an electroluminescence backlight.'
Academic
Central term in physics, materials science, and electrical engineering papers on light-emitting phenomena.
Everyday
Virtually never used in casual conversation.
Technical
Precise term for a specific photonic process in device engineering, lighting design, and semiconductor physics.
Examples
By Part of Speech
verb
British English
- The doped polymer began to electroluminesce under the applied field.
- These quantum dots can electroluminesce efficiently.
American English
- The semiconductor layer electroluminesced when voltage was applied.
- The new material electroluminesces in the infrared spectrum.
adverb
British English
- The material reacted electroluminescently.
- (This form is extremely rare and awkward; typically rephrased.)
American English
- (This form is virtually non-existent in standard usage.)
adjective
British English
- The electroluminescent panel provided a uniform glow.
- We measured the electroluminescent efficiency of the device.
American English
- The electroluminescent display is very thin.
- An electroluminescent wire was used for the decoration.
Examples
By CEFR Level
- (Not applicable for this C2-level technical term.)
- (Not applicable for this C2-level technical term.)
- Some watch faces use electroluminescence for backlighting.
- Electroluminescence is how certain nightlights work without getting hot.
- The research paper detailed a breakthrough in achieving blue electroluminescence from a perovskite material.
- OLED technology relies on organic electroluminescence to produce its vibrant colours.
Learning
Memory Aids
Mnemonic
Think: ELECTRO (electricity) + LUMINESCENCE (light emission) = light from electricity.
Conceptual Metaphor
ELECTRICITY AS A PUMP FOR LIGHT.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid calquing as 'электро-люминесценция' in informal contexts; the standard term is 'электролюминесценция'.
- Do not confuse with 'электрохимилюминесценция' (electrochemiluminescence), a related but distinct process.
Common Mistakes
- Misspelling as 'electroluminiscence' (missing the second 'e').
- Using it as a verb (e.g., 'to electroluminesce' is non-standard; preferred: 'to exhibit electroluminescence').
Practice
Quiz
Electroluminescence is most closely related to which of the following phenomena?
FAQ
Frequently Asked Questions
Not exactly. LED (Light Emitting Diode) is a specific type of semiconductor device that uses electroluminescence. 'Electroluminescence' is the broader physical phenomenon, while 'LED' refers to a diode device that employs it.
Yes. It is used in the backlights of some watches, older car dashboard lighting, certain types of flexible nightlights, and the thin panels in some appliance indicators.
It produces very little heat compared to incandescent bulbs, which is why it is often called 'cold light'. The energy conversion is directly from electricity to light without relying on heating a filament.
Incandescence produces light by heating a material until it glows (like a traditional light bulb). Electroluminescence produces light directly from electrical energy passing through a suitable material, without requiring it to become hot first.