Efficient and Stable CsPb(Br/I)₃@Anthracene Composites for White Light-Emitting Devices

Area of Science:

• Materials Science
• Optoelectronics
• Quantum Dot Technology

Background:

• Inorganic perovskite quantum dots offer unique optoelectronic properties for displays and lighting.
• Achieving stable white emission from these quantum dots is challenging due to anion-exchange reactions.

Purpose of the Study:

• To develop a method for fabricating inorganic perovskite quantum dot-based white light-emitting composites.
• To enable efficient and tunable white light emission for optoelectronic applications.

Main Methods:

• A one-pot preparation method was employed to create CsPb(Br/I)3@anthracene composites.
• Anthracene was introduced as a blue emission component to achieve white light.

Main Results:

• The fabricated white light-emitting composite demonstrated a photoluminescence quantum yield of 41.9%.
• White light-emitting devices achieved a color rendering index of 90.
• Tunable color temperatures from warm white to cool white were realized.

Conclusions:

• The developed one-pot method successfully creates inorganic perovskite quantum dot-based white light-emitting composites.
• These composites show significant potential for advancing white light-emitting diode (LED) technology.
• The findings pave the way for broader applications of perovskite quantum dots in displays and lighting.