Perovskite photovoltaics has witnessed an unprecedented increase in power conversion efficiency over the last decade. The choice oftransport layers, through which photo-generated electrons and holes are transported to electrodes, is a crucial factor for further improvingboth the device performance and stability. In this perspective, we critically examine the application of optical spectroscopy to characterizethe quality of the transport layer-perovskite interface. We highlight the power of complementary studies that use both continuous wave andtime-resolved photoluminescence to understand non-radiative losses and additional transient spectroscopies for characterizing the potentialfor loss-less carrier extraction at the solar cell interfaces. Based on this discussion, we make recommendations on how to extrapolate resultsfrom optical measurements to assess the quality of a transport layer and its impact on solar cell efficiency.

Additional Metadata
Keywords Physics and Astronomy (miscellaneous)
Publisher AIP
Funder NWO
Persistent URL
Journal Appl. Phys. Lett.
Hutter, E.M, Kirchartz, T, Ehrler, B, Cahen, D, & von Hauff, E. (2020). Pitfalls and prospects of optical spectroscopy to characterize perovskite-transport layer interfaces. Appl. Phys. Lett., 116(10), 100501: 1–100501: 8. doi:10.1063/1.5143121

Additional Files
16589M_E.Hutter.pdf Author Manuscript , 551kb
Imposed Embargo until:
Fri, October 09 2020 at 00:00 (CEST)