Interfacial optimization of hematite electron transport layer for enhanced charge transport in perovskite solar cells

IF 4 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-02-01 DOI:10.1007/s11082-024-08033-8

Muhammad Anwar Jan, Hafiz Muhammad Noman, Akbar Ali Qureshi, Fuchun Yang

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Abstract

Perovskite solar cells (PSCs) have emerged as a viable contender for the third-generation solar cell, thanks to their exceptional characteristics involving high power conversion efficiency (PCE) and comparatively low fabrication costs. However, the challenges associated with interfacial recombination and poor device stability under operating conditions are still limiting their commercial viability. These challenges can be overcome by incorporating interfacial layers in order to enhance charge transport and reduce recombination losses. Herein, we introduce piperazine dihydriodide (PZDI) as an interfacial layer between the hematite electron transport layer (ETL) and absorber layer in PSCs. The high-quality PZDI layer further passivates surface defects and improves energy level alignment to facilitate more efficient charge extraction. The PCE was noted significantly higher by incorporation of the PZDI interfacial layer, reaching 17.5%, compared to 13.0% for the reference device without an interfacial layer. Long-term stability tests demonstrated that the target device retains 91.80% of its initial efficiency compared to 82.9% for the reference device after 500 h. These findings highlight the key function of the PZDI interfacial layer enhancing the photovoltaic (PV) performance of PSCs and can serve as crucial components in the development of long-lasting and high-efficiency PV.

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钙钛矿太阳能电池中增强电荷输运的赤铁矿电子输运层界面优化

钙钛矿太阳能电池（PSCs）由于具有高功率转换效率（PCE）和相对较低的制造成本等特殊特性，已成为第三代太阳能电池的可行竞争者。然而，在操作条件下，与接口重组和设备稳定性差相关的挑战仍然限制了它们的商业可行性。这些挑战可以通过结合界面层来克服，以增强电荷传输和减少复合损失。本文引入二氢化哌嗪（PZDI）作为PSCs中赤铁矿电子传输层（ETL）和吸收层之间的界面层。高质量的PZDI层进一步钝化了表面缺陷，提高了能级对准，促进了更有效的电荷提取。加入PZDI接口层后，PCE显著提高，达到17.5%，而没有接口层的参考器件的PCE为13.0%。长期稳定性测试表明，500 h后，目标器件保持其初始效率的91.80%，而参考器件保持其初始效率的82.9%。这些发现突出了PZDI界面层增强PSCs光伏（PV）性能的关键功能，并且可以作为开发持久高效PV的关键组件。图形抽象

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.