Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when a gallium arsenide LED experiences increased temperature?
A)Wider band gap, blueshifted emission
B)Decreased efficiency, redshifted emission✓
C)Increased carrier mobility, higher intensity
D)Increased voltage drop, stable emission
💡 Explanation
Increased temperature causes increased atomic vibrations, which narrows the semiconductor's band gap via electron-phonon interaction; therefore the emitted light energy decreases, resulting in a redshift rather than a blueshift, because a smaller gap requires less energy.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome arises when using Scanning Tunneling Microscopy (STM) on a material with varied oxide layers?
- Which consequence results when intense light triggers isomerization in retinal molecules?
- Which outcome occurs when a silicon crystal is heavily doped?
- Which consequence results when an optical isolator malfunctions within a fiber optic gyroscope?
- Which risk increases when maintaining a closed Rankine cycle near its cavitation limit?
- Which phenomenon limits clock speed increases in integrated circuits primarily due to interconnect capacitance?
