Innovations based on the outstanding properties of metal halide perovskites.
This new family of materials is already pushing the photovoltaics industry towards power conversion efficiencies that were previously thought unachievable at industrial scale.
Instead of creating power, however, we aim to use the superb absorption and emission properties of perovskites for light emission, harnessing the same level of efficiency and tunability that makes these materials unique.
Key Intellectual Property
Helio Display Materials is a spin-out from two leading research groups from the universities of Oxford and Cambridge.
We licensed key early patents from the universities and are currently expanding this portfolio with our own technological developments and invention of new materials. The combination of licensed and new IP provides a unique position with respect to competitors, and puts Helio ahead of the game.
Perovskite Light Emitters
Our technologies are based on the use of innovative new materials built around metal halide perovskites. These materials are outstanding semiconductors which can be synthesized from low-temperature solution processes using earth abundant precursor materials. We take advantage of their exceptional high light absorption coefficients and emission efficiencies, as well as their extraordinary colour tunability, for applications as light emitters.
Perovskite vs Quantum Dots
Recently, quantum dots have emerged as innovative phosphors for displays with ultrawide colour gamut (colour space).
While quantum dots achieve their outstanding colour properties through an accurate control of the size of the nanocrystals (within less than 1 nm), perovskites demonstrate similar performance without the need of quantum size effects and core-shell nanostructures. Thus, simplified synthetic processes lead to stable and efficient materials.
Perovskite vs III/V Semiconductors
Metal halide perovskites share many properties with the direct band gap semiconductors used for high efficiency solar cells (e.g. GaAs) and LEDs (e.g. GaN). These include high absorption coefficients and good charge transport properties.
In addition, their optical properties can be tuned easily by changing the composition of the materials, which facilitates novel applications as colour converters or tailored light sources.