Xi Xi , LeiFei Yu , Jianbo Shao , Guilin Liu , Lan Wang , Liping Chen , Ning Tang
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The research results indicated that significant improvement differences could be observed when utilizing the HEI treatment for TOPCon solar cells prepared by PO and TO methods, with values of 0.133%<sub>abs.</sub> and −0.039%<sub>abs.</sub>, respectively. Meanwhile, HPI treatment induced a more significant efficiency improvement for these two types of cells, and the increase in efficiency is 0.247%<sub>abs.</sub> and 0.244%<sub>abs.</sub>, respectively. The experimental results demonstrated that the passivation effect for TOPCon solar cells prepared by PO and TO methods remained almost the same under the HPI treatment, and the improvement effect is less dependent on the tunnel oxidation technique used. Thus, the different passivation effects between HPI and HEI were further investigated, and the reason for the difference was attributed to the charge states and concentrations of hydrogen and non-equilibrium carriers during the hydrogenation. The results provided an improved scheme for enhancing the efficiency of TOPCon solar cells, shedding light on the role of HPI and HEI in the passivation process. This work brings further insights to TOPCon solar cells.</p></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":null,"pages":null},"PeriodicalIF":6.3000,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The differences between the hydrogenation by means of photon-injection and electron-injection for N-type tunnel oxide passivated contacts solar cells\",\"authors\":\"Xi Xi , LeiFei Yu , Jianbo Shao , Guilin Liu , Lan Wang , Liping Chen , Ning Tang\",\"doi\":\"10.1016/j.solmat.2024.112962\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Tunnel Oxide Passivated Contact (TOPCon) solar cells have received widespread attention in recent years, especially in improving conversion efficiency. 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The experimental results demonstrated that the passivation effect for TOPCon solar cells prepared by PO and TO methods remained almost the same under the HPI treatment, and the improvement effect is less dependent on the tunnel oxidation technique used. Thus, the different passivation effects between HPI and HEI were further investigated, and the reason for the difference was attributed to the charge states and concentrations of hydrogen and non-equilibrium carriers during the hydrogenation. The results provided an improved scheme for enhancing the efficiency of TOPCon solar cells, shedding light on the role of HPI and HEI in the passivation process. 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引用次数: 0
摘要
隧道氧化物钝化接触(TOPCon)太阳能电池近年来受到广泛关注,尤其是在提高转换效率方面。本文研究了采用光子喷射(HPI)和电子喷射(HEI)工艺的氢化技术对 TOPCon 太阳能电池的影响,强调与 HEI 相比,HPI 具有更高的改进效果和更广泛的应用范围。在 TOPCon 电池中,有几种制备隧道氧化层的方法,如等离子体氧化(PO)和间接热氧化(TO)。研究结果表明,使用 HEI 处理用 PO 和 TO 方法制备的 TOPCon 太阳能电池时,可以观察到明显的改进差异,其值分别为 0.133%abs.同时,HPI 处理使这两种电池的效率得到了更显著的提高,分别提高了 0.247%abs.实验结果表明,PO 法和 TO 法制备的 TOPCon 太阳能电池在 HPI 处理下的钝化效果基本相同,其改善效果对所使用的隧道氧化技术的依赖性较小。因此,进一步研究了 HPI 和 HEI 的不同钝化效果,并将差异原因归结为氢化过程中氢和非平衡载流子的电荷状态和浓度。研究结果为提高 TOPCon 太阳能电池的效率提供了一种改进方案,并揭示了 HPI 和 HEI 在钝化过程中的作用。这项工作为 TOPCon 太阳能电池带来了更多启示。
The differences between the hydrogenation by means of photon-injection and electron-injection for N-type tunnel oxide passivated contacts solar cells
Tunnel Oxide Passivated Contact (TOPCon) solar cells have received widespread attention in recent years, especially in improving conversion efficiency. This paper investigated the impact of hydrogenation technology using photon-injection (HPI) and electron-injection (HEI) processes on TOPCon solar cells, highlighting the higher improvement effect and broader application scope of HPI compared to HEI. In TOPCon cells, several methods are available to prepare the tunneling oxide layer, such as plasma oxidation (PO) and indirect thermal oxidation (TO). The research results indicated that significant improvement differences could be observed when utilizing the HEI treatment for TOPCon solar cells prepared by PO and TO methods, with values of 0.133%abs. and −0.039%abs., respectively. Meanwhile, HPI treatment induced a more significant efficiency improvement for these two types of cells, and the increase in efficiency is 0.247%abs. and 0.244%abs., respectively. The experimental results demonstrated that the passivation effect for TOPCon solar cells prepared by PO and TO methods remained almost the same under the HPI treatment, and the improvement effect is less dependent on the tunnel oxidation technique used. Thus, the different passivation effects between HPI and HEI were further investigated, and the reason for the difference was attributed to the charge states and concentrations of hydrogen and non-equilibrium carriers during the hydrogenation. The results provided an improved scheme for enhancing the efficiency of TOPCon solar cells, shedding light on the role of HPI and HEI in the passivation process. This work brings further insights to TOPCon solar cells.
期刊介绍:
Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.