Publication date: 22nd July 2026
While luminescence is ubiquitous in photovoltaic research, be it as a diagnostic tool or fingerprint of efficient device operation, the emissive process is seldom treated on equal footing with (re-)absorption in the simulation-based analysis of photovoltaic device operation. On the other hand, there is an increasing variety of opto-electronic devices that rely on the re-absorption of internal emission: not only do the most efficient solar cells benefit from photon recycling (PR) and luminescent coupling (LC), but radiative energy transfer also plays a vital role in spectral conversion devices, laser power converters, and thermophotonic (TPX) applications.
In our contribution, we review our comprehensive approach to the simulation of re-absorption effects in photovoltaic devices, both on the level of the optical detailed balance limit [1] and integrated with full drift-diffusion charge transport [2]. After revisiting key results of the literature in the light of our theory – such as the enhancement of VOC by PR [1,2] and the role of PR and LC in tandems [3,4], we demonstrate the versatility of the framework by application to the modelling of UV downshifting encapsulations for silicon solar cells, III-V multi-junction laser power converters, and near-field TPX devices.
The authors acknowledge financial support from the Swiss National Science Foundation via SINERGIA project "RADICALS", grant no. CRSII5_21667.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.