Pyroelectric materials and devices for energy harvesting applications

TLDR

Pyroelectric materials can generate electrical power from thermal fluctuations, a less explored alternative to thermoelectric harvesting. This review surveys energy‑harvesting technologies based on pyroelectric materials and systems. The review examines the pyroelectric effect, thermal and electric field cycles, material choices, device architectures, and harvesting circuits to enhance performance.

Abstract

This review covers energy harvesting technologies associated with pyroelectric materials and systems. Such materials have the potential to generate electrical power from thermal fluctuations and is a less well explored form of thermal energy harvesting than thermoelectric systems. The pyroelectric effect and potential thermal and electric field cycles for energy harvesting are explored. Materials of interest are discussed and pyroelectric architectures and systems that can be employed to improve device performance, such as frequency and power level, are described. In addition to the solid materials employed, the appropriate pyroelectric harvesting circuits to condition and store the electrical power are discussed.