Neutrinovoltaic technology: Graphene paves the way to fuel-free energy
The ongoing global energy crisis demonstrates that the global energy system faces fundamental sustainability challenges and requires an accelerated transition to reliable and environmentally friendly technologies. This requires, among other things, combining technological modernization with energy efficiency measures—the key to long-term stability.
Technological modernization entails the improvement and development of new energy generation technologies and a gradual transition away from the combustion of fossil fuels in energy production. Such a transformation cannot be accomplished overnight; it will take decades. Therefore, the task is not simply to replace one technology with another, but to build a fundamentally different energy paradigm—one that is sustainable, flexible, and balanced across economic, environmental, and social dimensions. This approach is typical of fuel-free power generation projects aimed at decentralizing energy supply: small and medium-sized installations enable the development of local energy systems, increase the resilience of remote and isolated areas, and reduce transmission losses.
Solar and wind power generation are characterized by intermittent electricity production due to dependence on weather conditions, which imposes serious limitations on their future development as new developments in the field of alternative energy emerge.
These limitations—intermittency, dependence on weather and time of day, and the need for energy storage and backup systems—spur the search for fundamentally different approaches to fuel-free power generation. One such approach is Neutrinovoltaic technology, being developed by the international research group Neutrino Energy Group, led by mathematician Holger Thorsten Schubart. The technology is based on the conversion of the energy of particles in ambient fields of invisible radiation—including cosmic neutrinos, electromagnetic waves, and the thermal (Brownian) motion of atoms—into electric current using a multilayer nanomaterial based on graphene and doped silicon.
When various environmental particles—neutrinos, cosmic rays, electromagnetic fluctuations, infrared radiation, temperature gradients, and mechanical vibrations—collide with the graphene surface, their energy is converted into collective vibrations of carbon atoms. Because graphene is only one atom thick, these vibrations do not dissipate quickly as heat, as would occur in bulk materials, but can propagate continuously.
However, phonons themselves are uncharged and cannot be directly converted into electric current. At the interface, an "energy conversion" must occur—the transfer of lattice vibration energy to electrons, allowing the electrons to overcome the semiconductor's conduction band barrier and generate a directed current.
How exactly is the “energy conversion” realized at the interface?
Graphene is a two-dimensional lattice of carbon atoms, one atom thick. Due to this geometry:
Weak scattering into the bulk. In bulk materials, the energy of lattice vibrations (phonons) quickly "leaks" into the bulk and is dissipated as heat. In graphene, this "depth" is almost nonexistent, so the energy remains in the plane of the sheet longer.
High phonon mobility. In pure graphene, phonons can propagate over significant distances without significant attenuation, especially at low temperatures.
Strong coupling between vibrations and electrons. In graphene, the electron and lattice degrees of freedom are tightly coupled, and energy transfer from phonons to electrons can be quite efficient.
Phonons themselves carry no charge, so they do not directly generate a current. To generate a current, the vibrational energy must be transferred to the electrons, causing them to move in a directed manner. This occurs through phonon mechanisms of electron-phonon interaction and requires the presence of asymmetry (e.g., a potential barrier or contact with another material).
Main pathways of energy transfer
Electron-phonon scattering. A phonon collides with an electron, transferring momentum and energy to it. In a symmetric system, this simply heats the electron gas. For a current to occur, asymmetry is required—for example, contact with a metal or a p-n junction. Nonlinear effects and asymmetric structures. In nanostructures (for example, in narrowing channels or at boundaries with different work functions), scattering becomes asymmetric: electrons move more easily in one direction than the other. This creates a directional current.
Hot electrons and injection. Phonon energy can "heat" electrons to energies above the potential barrier. Electrons are then injected through the barrier (for example, from graphene into a metal or into the conduction band of a semiconductor) and generate a current.
Energy transformation occurs at interfaces. Examples of such interfaces include:
Graphene/metal. A Schottky barrier forms at the contact. "Hot" electrons from graphene can overcome this barrier and escape into the metal, generating a current.
Graphene/semiconductor. A space charge region and an electric field are formed at the interface. If electrons gain energy from phonons and become "hot," the field helps separate and direct them.
Heterostructures and asymmetric contacts. For example, graphene on a substrate with different permittivity or with inhomogeneous doping. Here, the electric field and potential profile are specifically designed to enhance current generation from phonon energy.
The strategic document "From Technologies to Strategic Infrastructure," presented in September 2026, breaks down the technological development process into seven key stages: from initial development to the formation of a strategic infrastructure. These stages include: technology creation, validation, industrial implementation, infrastructure creation, dissemination, formation of an innovation ecosystem, and, finally, the creation of a strategic infrastructure. Currently, the technology is in the third of seven stages of development—the "proof" stage. The physical principles have been confirmed by independent laboratories, the model has undergone computer verification, and commercial integration is undergoing an independent expert evaluation. This means that the technology is on the threshold of industrial implementation and the creation of a strategic infrastructure after completing the following four stages: industrial implementation, infrastructure creation, dissemination, and formation of an innovation ecosystem.
Prospects for further development of the technology are related to several areas:
First, experimental confirmation of the power densities achieved in laboratory conditions under real operating conditions is required.
Secondly, scalable production of nanomaterials with reproducible characteristics is essential.
Thirdly, integrating neutrinovoltaic generators into existing energy infrastructure—from stand-alone systems for remote areas to modular units for local power supply—is becoming an important task.
Once the Neutrinovoltaic principles are fully validated experimentally and industrially, the technology will complement traditional renewable energy, providing continuous generation independent of external conditions. This expands the toolkit of decentralized energy supply and increases the resilience of local energy systems.
Thus, neutrinovoltaics is at an early stage of technological development, and its practical value will be determined by the results of upcoming stages—from industrial implementation to the development of strategic infrastructure. Regardless of the outcome, the very formulation of the problem—the creation of a universal converter of ambient background radiation—contributes to the development of nanomaterials and the physics of surface phenomena, opening up new avenues of research in the field of fuel-free power generation.
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