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SLOT-DIE-COATED ZINC TIN OXIDE FILM FOR CARBON-BASED METHYLAMMONIUM-FREE PEROVSKITE SOLAR CELLS
Surface Review and Letters ( IF 1.1 ) Pub Date : 2021-08-30 , DOI: 10.1142/s0218625x21501092
NUTCHA KHAMBUNKOED 1, 2 , DUANGMANEE WONGRATANAPHISAN 1, 2 , ATCHARAWON GARDCHAREON 1, 2 , NARUPON CHATTRAPIBAN 1, 2 , SAOWALAK HOMNAN 1, 2 , PRAYOON SONGSIRIRITTHIGUL 2, 3 , PIPAT RUANKHAM 1, 2
Affiliation  

At the laboratory scale, the spin coating technique is commonly used for depositing an electron transporting layer (ETL) in perovskite solar cells (PSCs). However, this technique is unsuitable for scaling up production. To enable large-scale deposition, slot-die coating, — a promising scalable technique and low operational cost processing, — has been proposed for depositing thin and uniform films across large areas. In this work, scalable slot-die coating processes of amorphous zinc tin oxide (ZTO) as ETLs are illustrated for carbon-based methylammonium-free PSCs. The amorphous ZTO was selected because of its excellent optical and electronic properties such as high electrical conductivity, high electron mobility, and high transparency. Slot-die-coated ZTO thin films were prepared from a proprietary homemade slot-die setup on a 3-axis computer numerical control (CNC) platform. Various thicknesses of ZTO thin films were utilized by changing the speed of the slot-die head. The device using slot-die-coated ZTO films with a film thickness of 48nm was found to exhibit the best device maximum power conversion efficiency of 9.92%, which is comparable to that of the device using spin-coated ZTO film. This work demonstrates the potential of the slot-die coating technique to replace the conventional spin-coating method in the fabrication of high efficiency and scalable PSCs.

中文翻译:

用于碳基无甲基铵钙钛矿太阳能电池的槽模涂层氧化锌薄膜

在实验室规模上,旋涂技术通常用于在钙钛矿太阳能电池 (PSC) 中沉积电子传输层 (ETL)。然而,这种技术不适合扩大生产。为了实现大规模沉积,槽模涂层——一种有前途的可扩展技术和低运营成本处理——已被提议用于在大面积上沉积薄而均匀的薄膜。在这项工作中,说明了作为 ETL 的非晶氧化锌锡 (ZTO) 的可扩展槽模涂层工艺用于碳基无甲基铵 PSC。选择非晶 ZTO 是因为它具有优异的光学和电子性能,例如高导电性、高电子迁移率和高透明度。槽模涂层 ZTO 薄膜是由专有的自制槽模装置在 3 轴计算机数控 (CNC) 平台上制备的。通过改变狭缝模头的速度来利用各种厚度的 ZTO 薄膜。该装置使用膜厚为 48 的 Slot-die-coated ZTO 薄膜nm 被发现表现出最佳的器件最大功率转换效率为 9.92%,这与使用旋涂 ZTO 薄膜的器件相当。这项工作证明了缝模涂布技术在制造高效率和可扩展的 PSC 方面替代传统旋涂方法的潜力。
更新日期:2021-08-30
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