83 citations · 201 across the 6 of their papers we have counts for
7 papers
Black silicon avalanche photodiode with dopant-free multiplication region achieves >98% EQE
O. Leiviskä, O. Setälä, A. Haarahiltunen +3
Conventional silicon avalanche photodiodes (Si APDs) rely on highly doped regions to enable impact ionization and achieve internal gain. However, inefficient charge collection in t…
Nanostructuring SiC by sequential plasma oxidation and reactive ion etching
Joonas Isometsä, Auguste Bieleviciute, Xiaolong Liu +2
Silicon carbide (SiC) is a highly promising material for the rapidly growing UV detection industry due to its visible-blindness, low dark current, and exceptional thermal and chemi…
Efficient photon capture on germanium surfaces using industrially feasible nanostructure formation
Kexun Chen, Joonas Isometsä, Toni P. Pasanen +2
Nanostructured surfaces are known to provide excellent optical properties for various photonics devices. Fabrication of such nanoscale structures to germanium (Ge) surfaces by meta…
Nanostructured germanium with >99 % absorption at 300-1600 nm wavelengths
Toni P. Pasanen, Joonas Isometsä, Moises Garin +3
Near-infrared (NIR) sensors find numerous applications within various industry fields, including optical communications and medical diagnostics. However, the state-of-the-art NIR s…
How much physics is in a current-voltage curve? Inferring defect properties from photovoltaic device measurements
Rachel C. Kurchin, Jeremy R. Poindexter, Ville Vähänissi +3
Defect-assisted recombination processes are critical to understand, as they frequently limit photovoltaic (PV) device performance. However, the physical parameters governing these…
Black-silicon ultraviolet photodiodes achieve external quantum efficiency above 130%
M. Garin, J. Heinonen, L. Werner +5
At present, ultraviolet sensors are utilized in numerous fields ranging from various spectroscopy applications via biotechnical innovations to industrial process control. Despite o…
Meeting Global Cooling Demand with Photovoltaics during the 21st Century
Hannu S. Laine, Jyri Salpakari, Erin E. Looney +3
Space conditioning, and cooling in particular, is a key factor in human productivity and well-being across the globe. During the 21st century, global cooling demand is expected to…