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东华大学张青红教授团队&日本九州大学碳中和能源研究所吴天昊AM：空气处理高效钙钛矿太阳能电池与全生命周期管理

2024/10/30 14:24:01 admin 阅读 32【次】

钙钛矿太阳能电池因其高效的光电转换效率而受到广泛关注。但其整个生命周期，包括制备、操作、稳定性和铅毒性等问题，仍存在部分挑战。例如PSC在高湿度、强光和电压等恶劣外部刺激下,容易受到不良降解。

基于上述问题，张青红教授团队和日本九州大学吴天昊等人对钙钛矿制备和使用寿命到寿命终止进行了分析。为实现整个生命周期的调节，一种生物衍生的几丁质基聚合物被开发。它可以从甲壳类动物中提取，含有酰胺和羟基。是一种天然的、一维的、高度柔性的生物材料。几丁质的引入诱导了介孔PbI₂膜，加速了有机盐溶液的向下扩散和钙钛矿的结晶，从而减轻了环境水分腐蚀的不良影响。由此产生的空气处理PSC的效率高达25.18%，具有宽的制备窗口和对恶劣环境和机械应力源的优异稳定性。此外线型几丁质聚合物起到类似颗粒的缝合作用,当T80 > 1200 h（湿热老化）和32次以上光/暗循环时，颗粒缝合装置表现出抑制降解和疲劳行为。

几丁质聚合物的物理保护屏障和化学螯合作用明显抑制了铅的泄漏过程，进一步促进了低铅污染和制造成本。这项工作为高效、稳定和可持续的钙钛矿光伏电池的可再生制造铺平了道路，推动了钙钛矿光电子技术的可持续发展。

Scheme 1. Schematic illustration of full lifecycle management of PSCs from preparation and operation to disposal.

Figure 1. a) Chemical structure and corresponding electrostatic potential maps of chitin. b) TEM images of the target perovskite film. c) FTIR spectra of chitin and chitin-PbI2 mixtures. d) High-resolution XPS spectra of Pb 4f and I 3d for the perovskite film. SEM images of e) PbI2 and f) perovskite films.g) GIWAXS images and h) in situ XRD patterns of perovskite films under thermal annealing. DLS particle size distribution of i) control and j) target fresh and aged PbI2 precursor inks. UV–vis spectra of k) control and l) target fresh and aged organic salt solution (The inset images are the color change of organic solution with extended aging time). m) 1H NMR spectra of organic salt solution aged for different times. n) Evolution of left FA+ and generated MFA+ in the above-aged organic salt inks.

Figure 2. Charge density difference profiles of the FAPbI3 slabs with a) PbI and b) VI defects after grain stitching, where the blue and yellow areas represent the electron depletion and accumulation, respectively. Formation energy of c) PbI and d) VI defects by DFT calculations. DOS curves of the perovskite with e) PbI and f) VI defects before and after grain stitching. g–j) Pseudo-contour plots and delay time-dependent transient absorption spectroscopy of the control and target perovskite film after pump excitation at 400 nm. k) Normalized decay kinetic curves probed at 810 nm of TA spectra. l) Schematic diagrams of possible exciton trapping and recombination processes.

Figure 3. a) J–V curves of champion PSCs. b) Summary of recent works on the air-prepared PSCs. c) Statistical performance of rigid devices. d) EQE spectra and e) steady-state power outputs of the champion device. f) SCLC tests of the device based on the FTO/Perovskite/Au structure. g) tDOS curves, h) the dependence of the Voc on light intensity, and i) Mott–Schottky curves of control and target PSCs. j) Pseudo-color maps of temperature-dependent PL spectra of perovskite films excited at 480 nm. KPFM images of k) control and l) target perovskite films.

Figure 4. a) The ideal interaction model of the H2O molecule with Pb2+, the smallest unit of polymers with Pb2+, and the smallest unit of polymers with H2O molecule. TOF-SIMS depth profiles of the aged b) control and c) target PSCs placed in the humid air for 10 days. d) Photographs of the control and target device immersed in DI water. e) Evolution of Pb2+ concentration variation in the DI water soaked with control and target devices at room temperature and 60 °C. f) Evaluating lead pollution level of broken waste PSCs on the soil according to Igeo. g) Schematic illustration of lead recycling and reuse in PSCs. h) XRD patterns of fresh and recycled PbI2 powder. i) J–V curves of control and target PSCs prepared by recycled PbI2 precursors.

本文来源：DOI: 10.1002/adma.202411982

https://doi.org/10.1002/adma.202411982

上一条上一篇：剑桥大学Samuel D.Stranks团队最新NE:界面质量和纳米级性能紊乱对钙钛矿太阳能电池稳定性的影响
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新闻资讯

东华大学张青红教授团队&日本九州大学碳中和能源研究所吴天昊AM：空气处理高效钙钛矿太阳能电池与全生命周期管理

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