Fig. 8: Pyroelectric energy harvesting experimental results measured by the Thermal Energy Harvesting Testing System. | Nature Communications

Fig. 8: Pyroelectric energy harvesting experimental results measured by the Thermal Energy Harvesting Testing System.

From: Thermoelectric coupling effect in BNT-BZT-xGaN pyroelectric ceramics for low-grade temperature-driven energy harvesting

Fig. 8

a The time-dependent temperature variation curves of samples. b, c The short-circuit current and open-circuit voltage of BNT-BZT-xGaN ceramics with various content of GaN. d, e The pyroelectric current and voltage obtained at different load resistance from 0–3000 MΩ. f The peak current, peak voltage, and output energy density (calculated by the equation \(W={\int }_{t=0}^{t=T}\frac{I\times U}{S\times d}{dt}\)) of BNT-BZT-xGaN ceramic with x = 0.1 wt%. g The electrical circuit diagram of the pyroelectric energy harvesting device and the photograph of the LED lit up by the device.

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