题目：

Conductive colloidal perovskite quantum dot inks towards fast printing of solar cells

作者：

Xuliang Zhang^1,2, Hehe Huang^1,2, Chenyu Zhao^1,2, Lujie Jin^1,3, Chihyung Lee⁴, Youyong Li^1,3, Doo-Hyun Ko⁴, Wanli Ma^1,3*, Tom Wu⁵ & Jianyu Yuan^1,2*

单位：

¹Institute of Functional Nano and Soft Materials, Soochow University, Suzhou, China.

²Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, China.

³Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, China.

⁴Department of Chemistry, Sungkyunkwan University, Suwon, Republic of Korea.

⁵Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, China.

摘要：

Quantum dot (QD) provides a versatile platform for high-throughput processing of semiconductors for large-area optoelectronic applications. Unfortunately, the QD solar cell is hampered by the time-consuming layer-by-layer process, a major challenge in manufacturing printable devices. Here we demonstrate a sequential acylation-coordination protocol including amine-assisted ligand removal and Lewis base-coordinated surface restoration to synthesize conductive APbI₃ (A = formamidinium (FA), Cs or methylammonium) colloidal perovskite QD (PeQD) inks that enable one-step PeQD film deposition without additional solid-state ligand exchange. The resultant PeQD film displays uniform morphology with elevated electronic coupling, more ordered structure and homogeneous energy landscape. Narrow-bandgap FAPbI₃ PeQD-based solar cells achieve a champion efficiency of 16.61% (certified 16.20%), exceeding the values obtained with other QD inks and layer-by-layer processes. The conductive PeQD inks are compatible with large-area device (9 × 9 cm²) fabrication using the blade-coating technique with a speed up to 50 mm s⁻¹.

影响因子：

49.7

分区情况：

一区

链接：

https://doi.org/10.1038/s41560-024-01608-5