Martin Green

Oct 21, 2024 | nature.com | Michael Nielsen |Andreas Pusch |Phoebe M. Pearce |Muhammad H. Sazzad |Peter J. Reece |Martin Green

AbstractPower can be generated from radiative exchange between two bodies with different temperatures—from the radiative cooling of the Earth’s surface into space, for example. Thermoradiative diodes are low-bandgap optoelectronic devices in which the occupancies of the valence and conduction bands are established through radiative exchange with the external environment.

Jul 19, 2023 | nature.com | Martin Green

Silicon heterojunction solar cells represent a promising photovoltaic approach, yet low short-circuit currents limit their power conversion efficiency. New research shows an efficiency record of 26.81% driven by lower resistance loss and higher current by replacing the conventional front and rear amorphous doped-silicon layers with nanocrystalline layers. Improved energy conversion efficiency has been a key contributor to recent photovoltaic cost reductions1.