Perovskite Solar Cells Are Coming For Fossil Fuels, Part Infinity

Oxford PV is bringing its tandem perovskite solar cells to China in an exclusive licensing deal with the solar manufacturer Trinasolar.

Perovskite Solar Cells Are Coming For Fossil Fuels, Part Infinity

Oxford PV is bringing its tandem perovskite solar cells to China in an exclusive licensing deal with the solar manufacturer Trinasolar.

Perovskite Solar Cells Are Coming For Fossil Fuels, Part Infinity

Oxford PV is bringing its tandem perovskite solar cells to China in an exclusive licensing deal with the solar manufacturer Trinasolar.

THz-Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites

Metal-halide perovskites (MHPs) emerged as a family of novel semiconductors with outstanding optoelectronic properties for applications in photovoltaics and light emission. Recently, they also attract interest as promising candidates for spintronics. In materials lacking inversion symmetry, spin-orbit coupling (SOC) leads to the Rashba-Dresselhaus effect, offering a pathway for spin current control. Therefore, inversion symmetry breaking in MHPs, which are characterized by strong SOC, has crucial implications. Yet, in complex low-dimensional hybrid organic-inorganic perovskites (HOIPs), the presence of and structural contributions to inversion symmetry breaking remain elusive. Here, employing intense THz fields, we coherently drive lattice dynamics carrying spectroscopic fingerprints of inversion symmetry breaking in Ruddlesden-Popper (PEA)$_2$(MA)$_{n-1}$PbnI${3n+1}$ perovskites, which are globally assigned to a centrosymmetric space group. We demonstrate coherent control by THz pulses over specific phonons, which we assign to either purely inorganic or highly anharmonic hybrid cage-ligand vibrations. By developing a general polarization analysis for THz-driven phonons, we pinpoint linear and nonlinear driving mechanisms. From this, we identify simultaneous IR- and Raman-activity of inorganic cage modes below 1.5 THz, indicating mode-selective inversion symmetry breaking. By exploring the driving pathways of these coherent phonons, we lay the groundwork for simultaneous ultrafast control of optoelectronic and spintronic properties in 2D HOIPs.

Post-perovskite - Wikipedia

3Sun, French research lab CEA achieve 30.8% tandem perovskite silicon solar cell efficiency

The new record was achieved on a 9cm2 tandem perovskite silicon solar cell compared to most records achieved on 1cm2 cells.

U.S.-made perovskite-silicon tandem solar modules could be produced at around $0.35/W

Techno-economic analysis conducted by NREL researchers has shown how perovskite-silicon tandem solar modules could currently hardly compete in cost with incumbent PV panels. Production costs for U.S.-made tandem products were found to range between $0.29/W and $0.42/W, with module efficiencies ranging from 25% to 30%.

Creative ideas for the energy transition

In the e-conversion Cluster of Excellence, experts are researching the mechanisms of energy conversion, providing crucial foundations for the energy transition. What are the research highlights? What is the secret to the cluster's success and why is Munich the perfect place to explore the renewable energies of the future? We take a look behind the scenes with Prof. Jennifer L.M. Rupp (TUM School of Natural Science) and Prof. Thomas Bein (Department of Chemistry, LMU Munich).