Dataset for temperature-dependent three-photon excited luminescence of AZRPbCl₃(800 nm) to paper "Phase Transitions, Dielectric Response, and Nonlinear Optical Properties of Aziridinium Lead Halide Perovskites" <i>Chem. Mater.</i> <b>2023</b>, 35, 22, 9725–9738

Experimental conditions [1]Nonlinear optical experiments were performed using a laser system employing a wavelength-tunable Topaz Prime Vis-NIR optical parametric amplifier (OPA) pumped by a Coherent Astrella Ti:Sapphire regenerative amplifier providing femtosecond laser pulses (800 nm, 75 fs) at 1 kHz repetition rate. Experiments employing 1300 nm laser pulses used the attenuated output of a tunable OPA. Experiments employing 800 nm laser pulses used the output of regenerative amplifier passed through a 5 mm aperture. Laser fluence at samples was equal to 0.21 mJ/cm²(1300 nm) and 0.30 mJ/cm² (800 nm). The single crystals of AZRPbCl₃, AZRPbBr₃, and AZRPbI₃ were crushed with a spatula and sieved through an Aldrich mini-sieve set, collecting a microcrystal size fraction of 63–88 μm. The size-graded samples were fixed in-between microscope glass slides to form tightly packed layers, sealed, and mounted to the horizontally aligned sample holder. No refractive index matching oil was used. The employed measurement setup operates in the reflection mode. Specifically, the laser beam was directed onto the sample at 45 degrees to its surface. Emission collecting optics consisted of a Ø25.0 mm plano-convex lens of a 25.4 mm focal length mounted to a 400 μm 0.22 NA glass optical fiber, which was placed along the normal to the sample surface. The distance between the collection lens and the sample was equal to 30 mm. The spectra of the temperature-dependent NLO responses were recorded by an Ocean Optics Flame T XR fiber-coupled CCD spectrograph with a 200 μm entrance slit. Scattered pumping radiation was suppressed with the use of a Thorlabs 750 nm shortpass dielectric filter (FESH0750) for studies on AZRPbCl₃ and AZRPbBr₃, and a 1100 nm shortpass dielectric filter (FESH1100) in the case of AZRPbI₃. Temperature control of the sample was performed using a Linkam LTS420 Heating/Freezing Stage and the measurements were performed in a temperature range of 93-293 K upon heating and cooling runs with a constant dT/dt of 10Kmin^-1. Temperature stability was equal to 0.1 K.[1] - <i>Chem. Mater.</i> <b>2023</b>, 35, 22, 9725–9738Related resourcesSee Jan Zareba's publication record for more examples of temperature-dependent studies of lead halide perovskites (methylhydrazinium, imidazolium and others)<br>实验条件[1] 非线性光学实验采用的激光系统，以Coherent Astrella钛宝石（Ti:Sapphire）再生放大器作为泵浦源，该放大器可输出重复频率1 kHz的飞秒激光脉冲（800 nm，75 fs），用于驱动波长可调谐的Topaz Prime Vis-NIR光学参量放大器（Optical Parametric Amplifier, OPA）。当使用1300 nm激光脉冲开展实验时，采用可调谐OPA的衰减输出光；当使用800 nm激光脉冲时，则采用经过5 mm孔径滤波后的再生放大器输出光。样品处的激光通量分别为0.21 mJ/cm²（1300 nm）与0.30 mJ/cm²（800 nm）。 AZRPbCl₃、AZRPbBr₃与AZRPbI₃的单晶经刮刀碾碎后，通过Aldrich微型筛网套装筛分，收集粒径介于63–88 μm的微晶组分。将分级后的样品固定于两片显微镜载玻片之间，形成紧密堆积薄层，封装后安装至水平对齐的样品架，未使用折射率匹配油。 本次测试采用反射式测量装置：激光以45°入射角入射至样品表面。发射光收集光学系统由直径25.0 mm、焦距25.4 mm的平凸透镜组成，该透镜连接至芯径400 μm、数值孔径0.22的玻璃光纤，光纤沿样品表面法线方向布置。收集透镜与样品之间的间距为30 mm。 温度依赖的非线性光学响应光谱通过Ocean Optics Flame T XR光纤耦合电荷耦合器件（Charge-Coupled Device, CCD）光谱仪采集，入射狭缝宽度为200 μm。针对AZRPbCl₃与AZRPbBr₃的测试，采用Thorlabs 750 nm短通介电滤波器（FESH0750）抑制泵浦辐射散射；针对AZRPbI₃的测试，则使用1100 nm短通介电滤波器（FESH1100）。 样品的温度控制采用Linkam LTS420冷热台，测试在93–293 K的温度区间内完成，升降温过程的恒定速率为10 K·min⁻¹，温度稳定性达0.1 K。 [1] — <i>Chem. Mater.</i> <b>2023</b>, 35, 22, 9725–9738 相关资源：如需更多卤化铅钙钛矿（含甲基肼基、咪唑基等）的温度依赖研究案例，请参阅Jan Zareba的发表论文记录。