Major Contributions

1. Integration of Phosphorus-Doped g-C₃N₄ to Enhance Self-Induced Polarization
The study introduces phosphorus-doped graphitic carbon nitride (PCN) into polyvinylidene fluoride (PVDF) films. This integration induces self-polarization, leading to the formation of the β-phase in PVDF, which enhances its triboelectric properties. This improvement results in a significant increase in electronegativity and output performance, achieving over 100 V increment in triboelectric output compared to pristine PVDF.

2. Development of High-Sensitivity Triboelectric Pressure Sensors
By utilizing the PVDF/PCN composite film, the research achieves a threefold increase in pressure sensitivity (1.48 V kPa1.48 V kPa) compared to pristine PVDF (0.51 V kPa0.51 V kPa). This demonstrates the potential of the material for use in self-powered wearable pressure sensors, particularly for applications like human motion detection and health monitoring.

3. Optimization of Phosphorus Doping for Maximum Performance
The study systematically explores the effect of calcination temperature on phosphorus doping levels in PCN. It identifies 450°C as the optimal temperature, yielding the highest doping content and triboelectric performance. This optimization ensures a balance between structural stability and enhanced electronegativity, contributing to superior energy harvesting capabilities.


主要貢獻

1. 引入磷摻雜石墨相氮化碳以增強自發極化效應
本研究將磷摻雜石墨相氮化碳（PCN）引入聚偏二氟乙烯（PVDF）薄膜中，成功誘導自發極化，促進PVDF中β晶相的形成，提升其摩擦電性能。此改良使摩擦電輸出相較於純PVDF薄膜增加超過100伏特，並顯著提高了材料的負電性。

2. 開發高靈敏度摩擦電壓力感測器
研究利用PVDF/PCN複合薄膜，將壓力靈敏度提升至1.48 V kPa1.48 V kPa，為純PVDF薄膜的三倍（0.51 V kPa0.51 V kPa）。此成果展現了該材料在自供電可穿戴壓力感測器領域的潛力，特別適用於人體運動檢測與健康監測等應用。

3. 優化磷摻雜條件以達到最佳性能
本研究系統探討了煅燒溫度對PCN中磷摻雜含量的影響，確定450°C為最佳溫度，可實現最高摻雜含量與摩擦電性能。此優化過程兼顧結構穩定性與負電性增強，進一步提升了能量收集效率。