对溶液化发光层成膜参数及电子传输层浓度进行调控，优化发光层成膜效果及器件发光性能，同时使用导电聚合物聚（3，4-乙烯二氧噻吩）-聚苯乙烯磺酸（PEDOT：PSS）作为透明阳极，刮涂导电银浆作为阴极，通过全溶液法制备了高效率的OLED。研究发现，发光层成膜参数的调整有效改善了其成膜效果。且适当的电子传输层材料浓度可以改善器件的载流子注入平衡，有效降低阴极的功函数，提高器件的发光性能；酸后处理的PEDOT：PSS薄膜导电性大大提升，在可见光范围的透过率与ITO相当。全溶液制备的发光器件最大电流效率为1.441 cd/A，与以ITO为电极的器件相比，增加了近50倍。

We propose a temperature-insensitive refractive index (RI) fiber sensor based on a Mach–Zehnder interferometer. The sensor with high sensitivity and a robust structure is fabricated by splicing a short photonic crystal fiber (PCF) between two single-mode fibers, where two microcavities are formed at both junctions because of the collapse of the PCF air holes. The microcavity with a larger equatorial dimension can excite higher-order cladding modes, so the sensor presents a high RI sensitivity, which can reach 244.16 nm/RIU in the RI range of 1.333–1.3778. Meanwhile it has a low temperature sensitivity of 0.005 nm/°C in the range of 33°C–360°C.