Lead halide perovskite nanocrystals have shown high photoluminescence quantum yields, even without growing inorganic shells that protect their surfaces from deleterious surface traps. These observations present an important departure from traditional semiconductor nanocrystals that require passivating surface defects to achieve such values. As a result, perovskites have been categorized as defect tolerance and are therefore more benign toward their electronic and optical properties.
Although attractive for displays, scintillation and other applications, in practice, the viability and use of lead halide perovskite nanocrystals in large scale manufacturing is currently limited by two main concerns: the toxicity of lead and the materials low stability to common operating conditions, such as moisture and heat.
This technology offers optimized synthesis of leaded and lead-free nanocrystals which exhibit high control of emitted wavelength, enhanced optical emission and stability.
- Non- toxic materials
- Control of emitted wavelength
- Additional stability to moisture
Applications and Opportunities
- LED displays (in particular for Quantum Dot Pixel Color Converter)
- Scintillators for X-ray detection
- Photovoltaic cells
- Single photon emitters (Quantum communication)