Extended Data Fig. 3: Pb amount measurement verification. | Nature

Extended Data Fig. 3: Pb amount measurement verification.

From: On-device lead sequestration for perovskite solar cells

Extended Data Fig. 3

a, Pb concentration leaked from two-side damaged devices without any Pb-sequestrating materials and EVA packaging layer after being soaked in 40 ml of water for 3 h. Six devices were tested. The concentrations of dissolved Pb from these pristine devices were also calculated based on the density and thickness of the perovskite layers. b, Typical cross-sectional scanning electron microscopy image of the devices used in a. c, A typical verification curve of nominal Pb concentrations of various PbI2 solutions and the measured concentrations by the flame atomic absorption spectrometer. The result shows excellent accuracy and precision of the measurement system.

Back to article page