DROP-IT proposes combining optoelectronics and photonics in a single flexible drop-on demand inkjet technology platform by means of exploiting the enormous potential of lead-free perovskite (LFP) materials. Specifically, novel crystalline structures beyond conventional ABX3 LFP (double-perovskites and rudorffites) will be computationally screened and chemically synthesized with superior properties as LFPs proposed in the literature. A(Sn-Ge)X3 (A=organic,Cs; X=Cl,Br,I) materials will be considered for initial benchmark devices. The future of DROP-IT technology is envisioned at long-term in the fields of photovoltaics, lighting and printed integrated photonics. This will be possible by developing highly innovative fabrication routes (inkjet printing towards Roll-to-Roll) of LFP pioneering materials (in bulk and nanoscale) by low-cost, high throughput, sustainable, large-scale fabrication techniques on flexible substrates (PET, f.e.) to revolutionize future power, lighting and communication systems. DROP-IT major novelty relies on the innovative use of newly synthesized LFPs in combination with the use of affordable, mask-less, drop on demand inkjet printing onto flexible substrates. The targeted breakthroughs towards the long-term vision of our technology will be based on the following challenges: (1) Theoretical screening of different LFP compound families and chemical synthesis of most suitable ones in the form of nanocrystals and polycrystalline thin films, (2) Formulation of specific and suitable inks of these materials for (3) Inkjet printing of thin films on flexible substrates and (4) Development of stable optoelectronic and photonic devices (solar cells with 12-15% and LEDs with 14-18% efficiencies, amplifiers-lasers with low threshold) as proofs-of-concept for a future technology based on new inorganic LFPs and charge transport layers. DROP-IT is supported by a strong and interdisciplinary consortium with complementary expertise to achieve these objectives.

The SuPerTandem project aims to accelerate Europes transition to clean energy by developing innovative photovoltaic (PV) manufacturing technologies for 2-terminal tandem cells and monolithically connected modules on flexible foils using low cost solution-processed perovskite absorber layers. Such devices feature efficiencies above 30%, performance stability profiles comparable to c-Si technologies, and excellent sustainability profile. Important aspects are minimizing the use and impact of scarce and critical materials by employing sustainable, earth-abundant materials and applying encapsulation as well as recycling strategies to guarantee circularity. Application of scalable manufacturing processes on film substrates will enable low production cost (< 20 /m2) and lower cost of electricity compared to current Si PV technology. This will be achieved by the partnership of leading European labs, industrial equipment makers and flexible PV module producing companies, building a coherent value chain of European innovation driven, cost competitive manufacturing to provide affordable innovative PV solutions. Dual use of land/surfaces will capitalize the application advantages of developed lightweight flexible free-form factor PV modules for integration into buildings, vehicles and agrivoltaics to facilitate net zero emission targets with affordable integrated systems. The overarching aim of SuPerTandem is to demonstrate technologies at TRL 5, while participating partners have interests to quickly implement the project outcomes for establishing roll-to-roll manufacturing plants in EU. The sustainability of the developed module technology will be validated from environmental and economic points of view by life-cycle and techno-economic assessments, highlighting its potential for low resource consumption and CO2 footprint and thus for salient contributions to a sustainable, secure, safe and affordable supply of renewable energy in Europe.

POWERSKIN+ will develop and scale-up eco-innovative, cost-effective and smart material solutions to renovate existing facade systems of both double skin and advanced integrated curtain walls. It will smart integrate unprecedented highly innovative insulations and renewable energy technologies, with breakthrough features based on nano-formulated VIP, PCM, flexible thin glass perovskite solar cells and multi-functional nano-enabled coatings. Comprehensive POWERSKIN+ portfolio comprising off-site prefabricated modular “ready-to-buy” and ‘easy-to-install’ glazing and opaque elements, sustainable eco-designed connecting framings and a dedicated large capacity electric building storage system will be processed up to the final commercializable end products. Powerskin+ system will be validated in non-residential buildings in three different environmental, economic, logistic and social scenarios, namely Portugal, Slovenia and Czech Republic, with environmental sustainability and benefits proving through LCA and LCCA approaches. The market uptake of POWERSKIN+ will be facilitated by optimal compatibility without additional structural modification. It will benefit from: lightweight transparent (TM) and opaque modules (OM) (12% and >8% for OM and TM respectively; 15% improvement in energy storage capacity), aiming to be recognized as an affordable high standard retrofit solution (installation cost and time reduce 50% and 74% respectively).