2018年5月9日 · The effect of a resonance on the residual resistivity and electronic lifetimes in PbTe is analyzed. By using the full Fermi integrals, room-temperature thermopower is calculated, confirming its increase in PbTe:Tl versus PbTe:Na, due to the presence of the resonant level.

Here, we report the application of lead telluride (PbTe) nanowires (NWs) as a passivating layer to cadmium telluride (CdTe) solar cells enhancing the opto-electronic properties and device performance. The PbTe NWs were synthesized using hot injection colloidal method and applied to CdTe films using a spin-coating process.

2022年10月1日 · Time-resolved photoluminescence (TRPL) measurements were performed at NREL on the sunny (or glass) side of the mirror structures to evaluate the effects of doping levels on carrier lifetime. A 670 nm laser diode was used for excitation, with a 50 μm spot size and a 150 ps pulse width at a repetition rate of 1 MHz and a power of 4.3 mW.

稳态光致发光 (PL) 和时间分辨光致发光 (TRPL) 测量结果表明，使用 PbTe NW 后缓冲液的器件的 PL 强度和少数载流子寿命有所改善，这与表面钝化一致。 此外，采用 PbTe NW 的器件显示出改善的 VOC 和填充因子 (FF)。 例如，将 PbTe 纳米线用作 CdS/CdTe 太阳能电池的钝化层，光电转换效率为 14.8%（VOC = 855 mV，FF = 77.3%），而控制装置达到 14.0%（VOC = 840 mV，FF） = 75.9%）。 VOC 和 FF 的改善与使用 PbTe NW 后缓冲器的器件观察到的后势垒 …

2008年7月25日 · We explored enhancing the Seebeck coefficient through a distortion of the electronic density of states and report a successful implementation through the use of the thallium impurity levels in lead telluride (PbTe). Such band structure engineering results in a doubling of zT in p-type PbTe to above 1.5 at 773

Here, we report that lead telluride (PbTe) nanowires (NWs) serve to passivate the CdTe back contact, enhancing the optoelectronic properties and device performance. The steady-state photoluminescence (PL) and time-resolved photoluminescence (TRPL) measurements showed improved PL intensity and minority carrier lifetime for devices utilizing a ...

2021年6月1日 · According to the ZT of PbTe, the thermoelectric performance of p type is superior to that of n type. The optimal ZT value of p type could reach 3.88 at 0.5% strain, while the optimal ZT value of n type could reach 3.05 at 2.0% strain.

2018年11月1日 · In this perspective we summarized several strategies that were successfully applied in PbTe-based thermoelectric materials through manipulating charge and phonon transports, such as optimizing...

时间分辨光致发光谱（TRPL）是在脉冲单色光照射下，探测物质激发态辐射跃迁光谱随时间变化动力学过程的光谱技术。 薄膜制备：Glass/PVK (用于研究薄膜本征性质); FTO/TiO2/PVK（用于研究 电子提取动力学 ）; Glass/PVK/Spiro-OMeTAD（用于研究空穴提取动力学）

2018年8月13日 · We perform a first-principles study of lattice thermal transport in PbTe by explicitly considering anharmonicity up to 4th order. To determine the temperature-dependent lattice constant of PbTe beyond quasiharmonic approximation, we introduce a simple yet effective scheme to account for anharmonic phonon renormalization at finite temperature.