Light Harvesting for Organic Photovoltaics

Light Harvesting for Organic Photovoltaics

The field of organic photovoltaics has developed rapidly over the last 2 decades, and small solar cells with power conversion efficiencies of 13% have been demonstrated. Light absorbed in the organic layers forms tightly bound excitons that are split into free electrons and holes using heterojunctions of electron donor and acceptor materials, which are then extracted at electrodes to give usefu...

Enhancing Light Harvesting in Organic Photovoltaics by Photonic Nanostructures

Organic solar cells have become a suitable photovoltaic technology thanks to their flexibility, scalability and light weight layout. They offer many advantages over the prevalent silicon industry, however, their efficiency is around 11%, still below the usual 20% on commercially available silicon solar panels [1], [2]. In this work, we propose an innovative method to increase light absorption o...

Light Manipulation in Organic Photovoltaics

Organic photovoltaics (OPVs) hold great promise for next-generation photovoltaics in renewable energy because of the potential to realize low-cost mass production via large-area roll-to-roll printing technologies on flexible substrates. To achieve high-efficiency OPVs, one key issue is to overcome the insufficient photon absorption in organic photoactive layers, since their low carrier mobility...

Organic Light-harvesting Materials for Power Generation

Organic photovoltaics

In the last ten years, the highest efficiency obtained from organic photovoltaics (OPVs), such as bulk heterojunction polymer:fullerene solar cells, has risen from 2.5 to 11 %. This rapid progress suggests that the commercialization of OPVs should be realized soon if we can solve some technical issues. The advances in the development of OPVs can be attributed to four fronts: (i) a better unders...