Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich outcome occurs when microscopic voids form near LED p-n junctions?
A)Reduced quantum efficiency by phonon scattering✓
B)Increased lifespan through optimized heat dissipation
C)Spectral blue shift from narrowed bandgap
D)Improved forward voltage, minimal series resistance
💡 Explanation
Reduced quantum efficiency occurs because phonon scattering increases due to increased lattice defects introduced by the voids; this increases non-radiative recombination rather than directly producing photons. Therefore, light output decreases because the energy is dissipated as heat rather than light.
🏆 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 Technology →- Which risk increases when burst errors affect LDPC decoding?
- Which outcome occurs when harmonics propagate in electrical power distribution systems?
- Which outcome occurs when thermal load exceeds design capacity in a refrigeration compressor?
- Which risk increases when concrete permeability rises when exposed rebar is subject to chloride ingress?
- Which outcome occurs when lubricating oil viscosity is too low during a CNC grinder operation?
- Which consequence results when a commercial aircraft loses hydraulic control?
