Unveiling Photovoltaic Secrets of OIHPs

• Unlock the secrets of the photovoltaic effect in OIHPs - research from RIKEN could see breakthroughs in improving solar cell efficiency. Discover how crystal symmetry and light shifting electron clouds can create an electric current.

Researchers from RIKEN have studied the origin of the photovoltaic effect in organic–inorganic perovskites (OIHPs). Their research could help improve the conversion efficiency of these materials in solar cells. The bulk photovoltaic effect in OIHPs had previously been attributed to an electric field generated by polarizations within the material. However, the team found evidence that was consistent with an alternative mechanism, which involved light shifting the electron clouds in the material and generating a current.

The team's findings highlight the importance of the crystal symmetry of the material, and could help optimize the properties of OIHPs. They now intend to explore other kinds of materials to better understand the photovoltaic effect and how to improve its efficiency.

What Factors Impact the Efficiency of the Photovoltaic Effect in OIHPs?

• Crystal structure and symmetry of the material
• Molecular composition of the material
• Band gap of the material
• Light intensity
• Light wavelength
• Temperature
• Charge carrier mobility
• Degree of disorder in the material
• Recombination rate of charge carriers
• Photon absorption rate