2023年10月13日 · PVK is widely used as a hole injection layer for blue and green PeLEDs due to its deep HOMO level 8, 19. Moreover, it is usually considered indissoluble in polar solvents such as dimethyl...

2022年3月13日 · Photoluminescence (PL) spectroscopy is an ubiquitous tool used to study material properties of perovskites, such as bandgap, electronic defects, local disorder, phase distribution, and dynamic effects like photo-induced halide segregation and material degradation.

光致发光光谱（Photoluminescence Spectroscopy，简称 PL谱 ），指物质在光的激励下，电子从价带跃迁至导带并在价带留下空穴；电子和空穴在各自的导带和价带中通过弛豫达到各自未被占据的最低激发态（在本征半导体中即导带底和价带顶），成为准平衡态；准平衡态 ...

2023年12月15日 · The effectiveness of surface passivation on the perovskite crystal and its grain boundaries was confirmed via measurements of the steady-state photoluminescence (PL) and time-resolved PL (TRPL) (Fig. 4 d and Fig. 4 e). Samples of the perovskite without the hole and electron transport layers were fabricated on glass to perform the PL ...

2023年7月15日 · Intrinsic defects in the electron transport layer (ETL) and perovskite (PVK) layer, as well as energy level mismatch between the PVK and ETL, severely limit the device performance of perovskite solar cells (PSCs). Here, we introduced a multifunctional molecule (tetramethylammonium chloride, TMACl) as a passivator in the SnO 2 ETL.

3 天之前 · As displayed in Figs. S1, the perovskite (PVK) film in the presence of CsPbBr 3 seed layer ... Seed/PVK film. (c,f) UV–vis absorption spectra of PVK and seed/PVK films. (g) The photoluminescence (PL), and (h) time-resolved photoluminescence (TRPL) spectra of the PVK and Seed/PVK films. (i) SCLC curves of hole-only devices based on PVK and ...

2023年3月3日 · Then, poly-TPD (6 mg mL −1 in chlorobenzene) layers and PVK (4 mg mL −1 in xylene) was spin-coated onto the NiO x at 3000 rpm and annealed on a hot plate for 20 min at 130 °C in a glovebox ...

2021年3月3日 · Photo-emissive properties, including steady-state and transient photoluminescence (PL) spectroscopy, are studied (investigated) for blinding and coaxial nanowires based on PPV and PVK. PL data or the average lifetime of excitons depends exclusively on the nanostructures architecture.

2015年3月9日 · 通过紫外可见光谱 (UVVis)、X射线衍射 (XRD)、透射电子显微镜 (TEM)、荧光光谱 (PL) 对复合材料进行了结构表征和形貌观察。 结果表明,UVVis光谱吸收峰在325nm和360nm,表现出纳米粒. 子明显的量子尺寸效应;TEM照片显示纳米CdS粒径分布较窄,均匀分散在PVK中。 XRD分析表明,CdS纳. 米颗粒已经形成。 PL结果显示:产物的荧光发射光谱峰波长在375nm和520nm。 emissionpeaks (375and520nm)．. 大大限制了其应用。 加入聚合物形成复合材料 …

In this study, we investigated the potential of Formamidinium lead iodide (FAPbI3) thin films as an absorber layer in perovskite-based solar cells, due to their good optoelectronic properties.