In the realm of security and defence, photovoltaics (PV) is emerging as an unconventional yet promising hero, offering a sustainable and stealthy alternative to traditional power sources. Remote monitoring systems, increasingly popular in both private and public sectors, rely on a plethora of electronic sensors and cameras to enhance safety and control. These systems, however, face challenges such as remote locations, temporary setups, and vulnerability to power outages. Here, photovoltaics steps in, offering a low-cost, flexible, and integrated solution.
The integration of PV cells with charge controllers and miniaturised battery systems presents a significant opportunity for surveillance systems. While current devices equipped with first-generation monocrystalline silicon micro-modules show promise, their integration, durability, and efficiency require further optimisation. The potential of photovoltaics in this sector is not limited to civilian applications. In modern warfare, the reliance on electronics and electric equipment is paramount, and traditional liquid-fuel power generators pose significant drawbacks. Thin-film flexible PV modules, with their lightweight, rollable, and portable nature, offer a more effective solution. These modules can deliver electricity for extended periods, are less visible in optical and radar spectra, and can be easily incorporated into various military equipment.
The development of cheap, efficient, and stable thin-film PV structures is crucial for these applications. One promising candidate is the Sb2S3 semiconductor compound, currently being investigated at TalTech’s Laboratory for Thin Film Energy Materials. This material’s production technology and structure allow for higher integration levels with elements of various shapes and dimensions, and its semi-transparency opens up possibilities for deposition on optical equipment.
The integration of robust and stable PV energy sources into security systems could revolutionise the sector. As research and development continue, we may see a future where photovoltaics plays a pivotal role in enhancing safety and control, both in civilian and defence applications. The potential of photovoltaics in this sector is vast, and its development could shape the future of security and defence technologies. The ongoing research and innovation in this field are not only addressing current challenges but also paving the way for new applications and advancements. As we look to the future, the role of photovoltaics in security and defence is set to become increasingly significant, driving the sector towards more sustainable and efficient solutions.