Journal ArticleDOI
Stable Layered 2D Perovskite Solar Cells with an Efficiency of over 19% via Multifunctional Interfacial Engineering.
Yawen Huang,Yahong Li,Eng Liang Lim,Tengfei Kong,Yang Zhang,Jing Song,Anders Hagfeldt,Dongqin Bi +7 more
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TLDR
In this paper, the authors proposed multifunctional interface engineering of 2D GA2MA4Pb5I16 perovskite by employing guanidinium bromide (GABr) on top of it to optimize the secondary crystallization process.Abstract:
Layered 2D perovskites have been extensively investigated by scientists with photovoltaics (PV) expertise due to their good environmental stability. However, a random phase distribution in the perovskite film could affect both the performance and stability of the devices. To overcome this problem, we propose multifunctional interface engineering of 2D GA2MA4Pb5I16 perovskite by employing guanidinium bromide (GABr) on top of it to optimize the secondary crystallization process. It is found that GABr treatment can facilitate to form a shiny and smooth surface of the 2D GA2MA4Pb5I16 film with excellent optoelectronic properties. Thus, we realize efficient and stable 2D perovskite solar cells (PSCs) with a champion power conversion efficiency (PCE) of 19.3% under AM 1.5G illumination. Additionally, the optimized device without encapsulation could retain 94% of the initial PCE for more than 3000 h after being stored under ambient conditions.read more
Citations
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Journal ArticleDOI
Efficient and Stable 2D@3D/2D Perovskite Solar Cells Based on Dual Optimization of Grain Boundary and Interface
Guodong Li,Jing Song,Jihuai Wu,Zeyu Song,Xiaobing Wang,Weihai Sun,Leqing Fan,Jianming Lin,Miaoliang Huang,Zhang Lan,Peng Gao +10 more
Journal ArticleDOI
Charge‐Carrier Transport in Quasi‐2D Ruddlesden–Popper Perovskite Solar Cells
TL;DR: In this paper , the 2D Ruddlesden-Popper (2DRP) perovskite materials have been explored as emerging semiconductor materials in solar cells owing to their excellent stability and structural diversity.
Journal ArticleDOI
Tailoring multifunctional anion modifiers to modulate interfacial chemical interactions for efficient and stable perovskite solar cells
Qixin Zhuang,Yong Zhang,Cheng Gong,Haiyun Li,Hongxiang Li,Zhongying Zhang,Hua Yang,Jiangzhao Chen,Zhi-qian Zang +8 more
TL;DR: In this paper , a simple and effective universal anion modification strategy to increase the photovoltaic performance of perovskite solar cells was implemented through incorporating a series of guanidinium salts containing different anions.
Journal ArticleDOI
Advances and Challenges in Two-Dimensional Organic-Inorganic Hybrid Perovskites Toward High-Performance Light-Emitting Diodes
TL;DR: In this article, the fundamental structure, photophysical and electrical properties of 2D perovskite films were illustrated systematically, and the remarkable achievements of two-dimensional perovsite light-emitting diodes (PeLEDs) were summarized.
Journal ArticleDOI
Two-dimensional perovskites: Impacts of species, components, and properties of organic spacers on solar cells
TL;DR: In this article , the impact of the organic spacers on photophysical properties and film quality of 2D halide perovskites is discussed, and several strategies to select and optimize the organic sparsers for enhancing photovoltaic characteristics are proposed.
References
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Journal ArticleDOI
Interface engineering of highly efficient perovskite solar cells
Huanping Zhou,Qi Chen,Gang Li,Song Luo,Tze Bing Song,Hsin Sheng Duan,Ziruo Hong,Jingbi You,Yongsheng Liu,Yang Yang +9 more
TL;DR: Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes and low-temperature processing steps allowed the use of materials that draw current out of the perovskites layer more efficiently.
Journal ArticleDOI
High-efficiency two-dimensional Ruddlesden–Popper perovskite solar cells
Hsinhan Tsai,Hsinhan Tsai,Wanyi Nie,Jean-Christophe Blancon,Constantinos C. Stoumpos,Reza Asadpour,Boris Harutyunyan,Amanda Neukirch,Rafael Verduzco,Jared Crochet,Sergei Tretiak,Laurent Pedesseau,Jacky Even,Muhammad A. Alam,Gautam Gupta,Jun Lou,Pulickel M. Ajayan,Michael J. Bedzyk,Mercouri G. Kanatzidis,Aditya D. Mohite +19 more
TL;DR: Thin films of near-single-crystalline quality are produced, in which the crystallographic planes of the inorganic perovskite component have a strongly preferential out-of-plane alignment with respect to the contacts in planar solar cells to facilitate efficient charge transport.
Journal ArticleDOI
Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes.
Himchan Cho,Su Hun Jeong,Min-Ho Park,Young-Hoon Kim,Christoph Wolf,Chang-Lyoul Lee,Jin Hyuck Heo,Aditya Sadhanala,NoSoung Myoung,Seunghyup Yoo,Sang Hyuk Im,Richard H. Friend,Tae-Woo Lee +12 more
TL;DR: Efficient organic-inorganic perovskite light-emitting diodes were made with nanograin crystals that lack metallic lead, which helped to confine excitons and avoid their quenching.
Journal ArticleDOI
Recombination in polymer-fullerene bulk heterojunction solar cells
TL;DR: In this article, the authors show that the recombination kinetics of polymer BHJ cells evolve from first-order recombination at short circuit to bimolecular recombinations at open circuit as a result of increasing the voltage-dependent charge carrier density in the cell.
Journal ArticleDOI
Polymer-templated nucleation and crystal growth of perovskite films for solar cells with efficiency greater than 21%
Dongqin Bi,Chenyi Yi,Jingshan Luo,Jean-David Decoppet,Fei Zhang,Shaik M. Zakeeruddin,Xiong Li,Anders Hagfeldt,Michael Grätzel +8 more
TL;DR: In this article, an approach to prepare perovskite films of high electronic quality by using poly(methyl methacrylate) (PMMA) as a template to control nucleation and crystal growth is presented.
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