适合什么需求Good For
半导体薄膜与外延层、二维材料、量子点和钙钛矿的发光峰、缺陷态、工艺前后变化及空间均匀性。Emission, defects, process changes and spatial uniformity in semiconductors, 2D materials, quantum dots and perovskites.
专业词入口Topic Entry
光致发光 PL 测试，先匹配激发条件、发射范围与样品尺度。Photoluminescence testing starts with excitation, emission range and sample scale.
PL 可用于半导体、量子点、钙钛矿和二维材料的发光峰、带边、缺陷态及均匀性比较。要让不同样品可比，需锁定激发波长、功率密度、积分时间、光斑与环境条件。PL supports emission, band-edge, defect-state and uniformity comparisons when excitation and acquisition conditions are controlled.
需要准备什么Prepare First
样品材料与结构、基底、激发波长和功率限制、目标发射范围、点测或 mapping、温度环境、对照样和原始光谱要求。Material and stack, substrate, excitation and power limits, emission range, point or map plan, temperature, controls and raw spectra.
常见风险Common Risks
激光加热与光漂白、探测器范围不匹配、基底荧光、不同功率下峰强不可直接比较，以及只凭单个峰判断缺陷或材料质量。Heating, bleaching, detector mismatch, substrate fluorescence, incomparable power settings and overinterpreting one peak.
推荐下一步Next Step
把“测 PL”转换成可比较的激发—测点—对照方案。Turn “measure PL” into a comparable excitation, location and control plan.
请提交样品结构、预期发射波段、可接受激光功率、测点示意、对照样和是否需要 mapping 或变温测试。微纳Hub 会先判断探测波段与空间分辨率是否匹配，并评估是否配合拉曼、吸收或时间分辨测试。Share the stack, emission band, power limit, locations, controls and mapping or temperature needs so detector range and complementary tests can be assessed.
提交 PL 测试需求Submit PL request查看表征与测试导航Open metrology route