The detection of hydrogen sulfide (H₂S) is essential because of its toxicity and abundance in the environment. Hence, there is an urgent requisite to develop a highly sensitive and economical H₂S detection system. Herein, a zinc phthalocyanine (ZnPc) thin film-based K⁺-exchanged optical waveguide (OWG) gas sensor was developed for H₂S detection by using spin coating. The sensor showed excellent H₂S sensing performance at room temperature with a wide linear range (0.1 ppm–500 ppm), reproducibility, stability, and a low detection limit of 0.1 ppm. The developed sensor showed a significant prospect in the development of cost-effective and highly sensitive H₂S gas sensors.

硫化氢（H ₂ S）的检测是必不可少的，因为它在环境中具有毒性和丰富性。因此，迫切需要开发一种高度灵敏且经济的H ₂ S检测系统。在本文中，锌酞菁（酞菁锌）薄膜为基础的ķ ⁺ -交换光波导（OWG）气体传感器被用于h开发₂通过使用旋涂小号检测。该传感器在室温下具有出色的H ₂ S感测性能，线性范围宽（0.1 ppm–500 ppm），可重复性，稳定性好，检测限低至0.1 ppm。研制出的传感器在开发具有成本效益的高灵敏度H ₂ S气体传感器方面显示出重要的前景。