用于大幅提高钙钛矿太阳能电池短路电流密度和填充因子的基板界面工程,ACS Applied Energy Materials

当前位置： X-MOL 学术 › ACS Appl. Energy Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

用于大幅提高钙钛矿太阳能电池短路电流密度和填充因子的基板界面工程
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2023-08-17 , DOI: 10.1021/acsaem.3c01425
Xianjin Wang ₁ , Chao Luo ₁ , Feng Gao ₁ , Changling Zhan ₁ , Yang Li ₁ , Qing Zhao _{1,

2,

3}

Affiliation

与广泛研究的上界面（n-i-p钙钛矿太阳能电池（PSC）中空穴传输层和钙钛矿之间的界面）仅传输载流子不同，基底界面（电子传输层和透明导电基底之间的界面）传输载流子。电荷载流子和光子同时发生。因此，管理该接口对于制造高效率 PSC 至关重要，而之前它在很大程度上尚未被探索。在此，我们通过衬底界面工程构建了微/纳米抗反射结构并缩短了光子传输距离以减少光子损失。此外，发现衬底界面处的能级排列更加匹配，以改善衬底处理后的载流子提取。最后，J _SC )从24.95到25.79 mA·cm ^–2，填充因子(FF)从81.59到83.22%。这项工作深刻地揭示了隐藏在基底界面中对J _SC和 FF 影响的至关重要的科学重要性，为通过基底界面工程设计增强的光管理和界面电子传输提供了研究见解，以实现更高效率的金属卤化物钙钛矿光伏发电。

"点击查看英文标题和摘要"

Substrate Interface Engineering for Drastically Boosted Short-Circuit Current Density and Fill Factor in Perovskite Solar Cells

Unlike the widely studied upper interface [interface between the hole transport layer and perovskite in n–i–p perovskite solar cells (PSCs)] which only transports carriers, the substrate interface (interface between the electron transport layer and the transparent conductive substrate) transports charge carriers and photons simultaneously. Therefore, managing this interface is crucial for manufacturing high-efficiency PSCs, while it remained largely unexplored previously. Herein, we constructed micro-/nano-antireflection structures and decreased the photon transmission distance to reduce photon loss through substrate interface engineering. In addition, energy level alignment was found to be more matched at the substrate interface to improve the carrier extraction after substrate treatment. Consequently, this tailored substrate interface enabled significantly improved photovoltaic performance of PSCs with a power conversion efficiency (PCE) of up to 24.47%, due to the dramatically enhanced short-circuit current density (J_SC) from 24.95 to 25.79 mA·cm^–2 and fill factor (FF) from 81.59 to 83.22%. This work profoundly uncovered vital scientific importance hidden in the substrate interface for affecting the J_SC and FF, opening up research insight for designing enhanced light management and interface electron transport through substrate interface engineering for higher efficiency metal halide perovskite photovoltaics.

更新日期：2023-08-17

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南