近期，二維層狀鈣鈦礦材料因其優異的光電性能、熱穩定性、化學穩定性和環境穩定性，廣泛應用在各種光電元件如：太陽能電池、發光二極管、光偵測器器等。在本研究中，我們將2D Ruddlesden-Popper鈣鈦礦(PEA2PbI4)與氧化鋅 (ZnO)奈米柱(NRs)結合，用於雙重光和氣體感測應用。通過調整鈣鈦礦前驅溶液中DMSO和GBL的溶劑體積比來製備PEA2PbI4，我們利用SEM、XRD、PL、UV-Vis以及光響應測量進行了材料與元件表現分析。結果顯示，使用純GBL溶劑製備的PEA2PbI4鈣鈦礦前驅溶液並沉積於ZnO奈米柱上的元件達到了最佳的光感測能力。通過進一步優化PEA2PbI4的莫爾濃度至1.25 M，基於PEA2PbI4/ZnO奈米柱的元件在綠光照射下的光靈敏度遠超過純ZnO奈米柱元件，達到了2246倍。此外，在綠光照射的輔助下，基於PEA2PbI4/ZnO奈米柱元件在室溫下對CO氣體顯示出有效的檢測效果，靈敏度約為2.3%。雙重光和氣體感測器在未來市場中預計具有高度競爭力，顯示出其在實際應用中的巨大潛力。

Recently, two-dimensional (2D) layered perovskite materials have garnered significant attention for their applications in various optoelectronic devices, such as solar cells, light-emitting diodes, photodetectors, and others, due to their excellent optoelectronic, thermal, chemical, and environmental stability. In this study, we integrated 2D Ruddlesden-Popper perovskite (PEA2PbI4) with zinc oxide (ZnO) nanorods (NRs) for the application of dual light and gas sensing. By adjusting the solvent volume ratio of DMSO and GBL for the fabrication of PEA2PbI4, we conducted a series of evaluations using SEM, XRD, PL, UV-Vis, and light response measurements. Our findings revealed that the device with PEA2PbI4 prepared using pure GBL solvent deposited onto the ZnO NRs achieved the best photosensing capability. Through further optimization of the concentration of PEA2PbI4 to 1.25 M, the PEA2PbI4/ZnO NRs-based device exhibited a photosensitivity of 2246 times for green light, surpassing that of pure ZnO NRs-based device. Additionally, with the aid of green light illumination, the PEA2PbI4/ZnO NRs-based device demonstrated effective CO gas detection at room temperature, yielding a sensitivity of approximately 2.3%. Dual light and gas sensors are expected to be highly competitive in future markets, underscoring their promising potential for practical applications.

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