全新OMN质料，“一个演员，两个脚色”！！在钙钛矿薄膜制备历程中同时实现结晶调控以及缺陷钝化，为客制化功能质料提供了新措施。 – 质料牛

一、全新 【导读】  

尽管经由差距的质质料策略，钙钛矿太阳能电池的料个两个料提光伏功能患上到了极大的改善，但与传统妄想比照，脚色结晶及缺在不同性以及功能方面仍有很大差距。钙钛供新当初被普遍接受的矿薄客制钝化，钙钛矿缺陷的膜制措施以及，钙钛矿晶粒的备历可控妨碍依然是进一步后退实际运用配置装备部署功能的挑战。在这项使掷中，程中措施韩国国立Pukyong National University 的实现Fengwu Liu（第一作者），Sung Heum Park（通讯作者）等人妄想并开拓了多功能氧基封端melem纳米粒子（OMN）改性剂，调控并经由反溶剂工程将其退出到了钙钛矿中。陷钝OMN 的化为化功大比概况积确保了经由调节结晶历程并经由反溶剂残缺钝化大批缺陷来破费出高品质的钙钛矿薄膜。melem纳米粒子后退了 PSC 的质牛光伏功能。此外，全新高品质的钙钛矿薄膜以及卓越的缺陷钝化相散漫，后退了器件的晃动性。

二、【下场掠影】

相关钻研下场以“Oxyl-terminated Melem Nanoparticles as Crystallization Modulators and Passivating Anchors for High-Performance Perovskite Solar Cells”为题宣告在Nano Energy上。韩国国立釜庆大学（Pukyong National University）Fengwu Liu为一作，Sung Heum Park教授为通讯作者。

三、【中间立异点】

1.接管自上而下的措施，由氮化碳乐因素化了功能化melem纳米颗粒。

2.定制的纳米粒子实现为了钙钛矿结晶的调节以及缺陷钝化。

3.经由纳米粒子较大的比概况积实现最实用的打仗反映。

4.实用提升钙钛矿颠倒太阳能电池器件功能。

四、【数据概览】

Fig. 1. (a) Schematic diagram of OMN preparation process. (b)XRD of CCN. (c) FTIR of the powder of CCN and OMN. SEM (d) and (e) TEM images of CCN. (f) TEM of OMN. (g) TEM-EDS mappings of OMN.

Fig. 2. (a) OMN molecular structure and visualization of the ESP result; (b) A schematic illustration of the interaction between OMN and perovskite; (c) Theoretical calculation of molecular interaction between the perovskite precursors (MAI, PbI2) and OMN. The formation energies of OMN-MAI, OMN-PbI2, and PbI2-MAI molecular structures, calculated by DFT.

Fig. 3. (a) Schematic diagram of the preparation process of MA-based perovskite thin film; SEM (b) and XRD (c) of the MA-based perovskite film without and with OMN before the annealing. SEM (d) and XRD (e) of the MA-based perovskite film without and with OMN after annealing.

Fig. 4. FTIR spectra of (a) PbI2, OMN and OMN with PbI2; (b) MAI, OMN and OMN with MAI. XPS spectra of (c) C 1s, (d) Pb 4f and (e) I 3d with and without OMN; NMR spectra of (f) OMN, MAI and OMN with MAI, (g) OMN and OMN with PbI2 and (h) OMN, MAPbI3 and OMN with MAPbI3.

Fig. 5. SEM (a), XRD (b), PL (c) and (d) UV–vis absorption spectra of MA-based perovskite film prepared with different OMN concentrations on glass. (e) UV–vis absorption spectra of the control and the OMN-perovskite film, respectively. (f) Contact angle of MA-based control and with 1.0mg/ml OMN-perovskite film on CB.

Fig. 6. (a) Schematic structure of the MA-based device. Cross-sectional SEM of the (b) Control and (c) modified MA-based device. J-V curves of the PSC devices using different OMN concentrations optimized for (d) MA-based and (g) CsFAMA-based active layers. Forward and reverse J-V scans of the best performing control devices and OMN-modified (e) MA-based and (h) CsFAMA-based PSCs. IPCE spectra and integrated photocurrents of the best performing control devices and OMN-modified (f) MA-based and (i) CsFAMA-based PSCs.

Fig. 7. Different irradiation intensities for MA-based device of (a) J_SC and (b) Voc. (c) Dark J-V curves for MA-based control and OMN-modified PSCs. Dark J–V characteristics of MA-based (d) control and (e) OMN-modified device (the inset shows the device structure). (f) Stability testing of MA-based PSC devices at room temperature and in a nitrogen environment (H₂O 30 ppm, O₂ 30 ppm).

五、【下场开辟】

客制化具备多功能钝化能耐的氧基封端 melem 纳米粒子，并将其用作改性剂。而后，经由与抗溶剂工程相散漫，将这些纳米颗粒融入到了钙钛矿层中。这项使命夸张了OMN 若何增长中间相的天生，以及若何在未退火阶段缓解钙钛矿晶体的结晶速率。同时，在退火历程中，OMN 中的种种官能团可钝化钙钛矿薄膜中的种种外部缺陷，从而清晰飞腾缺陷密度。因此，基于 MA 以及 CsFAMA 器件的 p-i-n 型钙钛矿太阳能电池的 J_SC、V_OC 以及 FF 都患上到了实用改善。

在 DFT 合计的帮手下，这项钻研提供了一种新措施，经由制备定制功能化纳米粒子，实现更实用的钝化以及更高品质的钙钛矿薄膜。它证明了经由妄想精确的削减剂来辅助器件制作，可能在 P-I-N 妄想器件中实现晃动的光伏功能。

文献链接：“Oxyl-terminated Melem Nanoparticles as Crystallization Modulators and Passivating Anchors for High-Performance Perovskite Solar Cells”（Nano Energy，https://doi.org/10.1016/j.nanoen.2023.109220）

本文由W供稿

本文地址：http://snpukspa.qnnocdc.cn/html/87e894757.html