Local electrical characterizations of cadmium telluride solar cells using low energy electron beam
Heayoung Yoon, Paul M. Haney, Dmitry A. Ruzmetov, Hua Xu, Marina S. Leite, Behrang H. Hamadani, Albert A. Talin
We investigate local electronic properties of cadmium telluride solar cells using electron beam induced current (EBIC) measurements with current-collecting patterned contacts. EBIC measurements are performed with a spatial resolution as high as ≈20 nm both on the top surface and throughout the cross-section of the device, revealing an enhanced carrier collection in the vicinity of grain boundaries. Furthermore, we measure local current-voltage characteristics using contacts with dimension both larger (≈5 µm × 10 µm) and smaller (≈1 µm × 1 µm) than the device thickness (≈4 m), finding that the value of local open-circuit voltage is also larger near grain boundaries.
, Haney, P.
, Ruzmetov, D.
, Xu, H.
, Leite, M.
, Hamadani, B.
and Talin, A.
Local electrical characterizations of cadmium telluride solar cells using low energy electron beam, Solar Energy Materials and Solar Cells, [online], https://doi.org/10.1016/j.solmat.2013.07.024
(Accessed December 1, 2021)