CsPbI₃ Powder

Description

CsPbI₃ Powder (Caesium Lead Iodide Perovskite)

Basic Information
CAS Number: 18041-25-3
Chemical Formula: CsPbI₃
Molecular Weight: 720.82 g/mol
Synonyms: Caesium Lead Triiodide, Cs-based Perovskite, CsPbI₃ Perovskite
Appearance: Black or dark red powder

Material Properties
Perovskite Structure: CsPbI₃ crystallizes in a perovskite-type cubic (α-phase) at high temperatures and transitions to an orthorhombic (δ-phase) at room temperature, which affects its optoelectronic performance.
Direct Bandgap Semiconductor: Exhibits a bandgap of ~1.73 eV in the α-phase, making it an ideal absorber for photovoltaic and optoelectronic applications.
Enhanced Thermal Stability: Compared to organic-inorganic hybrid perovskites (e.g., MAPbI₃), CsPbI₃ offers improved thermal stability, making it more durable in device applications.
Strong Light Absorption: Efficiently absorbs visible and near-infrared light, improving light-harvesting efficiency.
Tunable Optoelectronic Properties: Bandgap engineering is possible by varying synthesis conditions or substituting halides.

Applications
Perovskite Solar Cells (PSCs):
CsPbI₃ is widely used as a light-absorbing layer in perovskite solar cells, offering high power conversion efficiency (PCE) and enhanced stability.
Perovskite Light-Emitting Diodes (PeLEDs):
Exhibits strong photoluminescence, making it suitable for high-efficiency PeLEDs in red-light-emitting devices.
Photodetectors:
High absorption in the visible-NIR region enables high-performance photodetectors with fast response times.
Tandem Solar Cells:
Used in perovskite-perovskite and perovskite-silicon tandem solar cells to improve overall efficiency.
X-ray Detection & Scintillators:
Investigated for applications in X-ray detection and imaging technologies due to its superior optoelectronic properties.