Finally, we focus on the remaining challenges and prospects of 2D PSCs to further optimize the device performance for practical applications. Jing Xue, Alok Garg, Berkehan Ciftcioglu, Shang Wang, Jianyun Hu, Ioannis Savidis, Manish Jain, Michael Huang, Hui Wu, Eby G. We then provide our insights into the state-of-the-art strategies used to manipulate the crystallization kinetics of 2D perovskites with an emphasis on their functionalities of optimized film properties and cell performance. First, we summarize the archetypes of 2D perovskites that have been incorporated into high-performance PSCs and review the essential crystal nucleation and growth mechanisms. This review aims to provide guidelines on crystallization control in 2D perovskites and inspires the development of simple and compatible optimization methods for different 2D perovskite systems. The manipulation of crystalline orientation and ordered quantum well (QW) arrangement have emerged as two main factors to achieve high-quality 2D perovskite deposition. The advancement of perovskite solar cells (PSCs) using 2D perovskites is necessarily accompanied by an in-depth understanding of the crystallization kinetics for thin-film formation. Two-dimensional (2D) perovskites have gained tremendous research interest in optoelectronic applications thanks to their structural diversity and superior environmental stability. Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong ![]() ![]() Institute of New Materials and Industrial Technologies, Wenzhou University, Wenzhou 325035, China School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaĮ-mail: Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Moscow 117393, Russia 9 years 1 month Senior Pharmacist Jul 2017 - Jun 20225 years Singapore Pharmacist Apr 2014 - Jul 20173 years 4 months Singapore Pre-registration Pharmacist Jun 2013 - Apr 201411 months Singapore. Chinaĭepartment of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong KongĮ-mail: of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Huangpu Hydrogen Innovation Center, Guangzhou University, Guangzhou 510006, China Jingxue’s education is listed on their profile. ![]() This study provides new design guidelines for efficient interfacial materials and also demonstrates that interface engineering could be a key strategy to improve perovskite solar cells.College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, ChinaĮ-mail: Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, ChinaĮ-mail: Provincial Key Laboratory of Luminescence from Molecular Aggregates (South China University of Technology), Guangzhou 510640, P. View Jingxue Huang’s profile on LinkedIn, the world’s largest professional community. We also found that conventional water–methanol-soluble polymer interlayer, such as PFN, was incompatible with the perovskite films because of the small molecular size of aprotic solvent such as MeOH, which could decompose the perovskite films to PbI 2, resulting in considerably lower solar cell performance. ![]() This simple modification of the cathode interface showed a remarkable enhancement of power conversion efficiency (PCE) from 12.4% to 15.0% and also reduced the hysteresis of photocurrent. The PN 4N polymer is soluble in IPA and n-BuOH, which are orthogonal solvents to the metallohalide perovskite films, and therefore they can be spuncast on the heterojunction layer before the deposition of the metal cathode. A new amino-functionalized polymer, PN 4N, was developed and applied as an efficient interlayer to improve the cathode interface of fullerene/perovskite (CH 3NH 3PbI xCl 3− x) planar heterojunction solar cells.
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