In this work, we propose a rationally designed hybrid-bending instrument for reliably evaluating the functionality of a flexible photovoltaic–piezoelectric hybrid generator (PPHG) under simultaneously incident solar and mechanical energies. The deformation height of the PPHG is formulized and estimated on the basis of the geometric analysis of the bent PPHG to automatically calibrate the unexpected changes in experimental conditions during the simultaneous application of solar and mechanical stimuli. By using the proposed instrument, we successfully evaluate the performance of the PPHG and confirm that the developed instrument could prevent the over-evaluation of photovoltaic performance caused by the change in the height of the PPHG during mechanical bending. Thus, we objectively characterize the output behavior of the PPHG under simultaneously incident solar and mechanical stimuli. Our work in this study would contribute to developing an appropriate strategy for accurate characterization, which helps understand the underlying synergistic mechanism of hybrid energy harvesters.

在这项工作中，我们提出了一种合理设计的混合弯曲仪，用于可靠地评估在同时入射的太阳能和机械能下的柔性光伏-压电混合发电机（PPHG）的功能。在弯曲PPHG的几何分析的基础上确定和估算PPHG的变形高度，以自动校准在同时施加太阳和机械刺激过程中实验条件的意外变化。通过使用所提出的仪器，我们成功地评估了PPHG的性能，并确认开发的仪器可以防止由于机械弯曲过程中PPHG高度的变化而引起的光伏性能的过高评估。因此，我们客观地描述了在同时入射的太阳和机械刺激下PPHG的输出行为。我们在这项研究中的工作将有助于开发一种用于准确表征的适当策略，这有助于理解混合能源收集器的潜在协同机制。