Journal ArticleDOI
The surface of halide perovskites from nano to bulk
Jingjing Xue,Rui Wang,Yang Yang +2 more
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In this paper, the authors summarize and assess recent advances in the understanding of perovskite surfaces and surface strategies towards improving perovsite materials and the efficiency and stability of pervskite devices.Abstract:
The surface of a semiconductor often has a key role in determining its properties. For metal halide perovskites, understanding the surface features and their impact on the materials and devices is becoming increasingly important. At length scales down to the nanoscale regime, surface features become dominant in regulating the properties of perovskite materials, owing to the high surface-to-volume ratio. For perovskite bulk films in the micrometre range, defects and structural disorder readily form at the surface and affect device performance. Through concerted efforts to optimize processing techniques, high-quality perovskite thin films can now be fabricated with monolayer-like polycrystalline grains or even single crystals. Surface defects therefore remain the major obstacle to progress, pushing surface studies to the forefront of perovskite research. In this Review, we summarize and assess recent advances in the understanding of perovskite surfaces and surface strategies towards improving perovskite materials and the efficiency and stability of perovskite devices. The surface features of metal halide perovskites have a crucial role in determining their properties. This Review introduces the recent advances in the understanding of perovskite surfaces and surveys the surface strategies towards improving the properties of perovskite materials and the performance of perovskite optoelectronic devices.read more
Citations
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Journal ArticleDOI
Regulating Surface Termination for Efficient Inverted Perovskite Solar Cells with Greater Than 23% Efficiency
Fengzhu Li,Xiang Deng,Feng Qi,Zhen Li,Danjun Liu,Dong Shen,Minchao Qin,Shengfan Wu,Francis Lin,Sei-Hum Jang,Jie Zhang,Xinhui Lu,Dangyuan Lei,Chun-Sing Lee,Zonglong Zhu,Alex K.-Y. Jen +15 more
TL;DR: A rationally designed bifunctional molecule, piperazinium iodide (PI), containing both R2NH and R2 NH2+ groups on the same six-membered ring, behaving both as an electron donor and an electron acceptor to react with different surface-terminating ends on perovskite films is reported.
Journal ArticleDOI
Stabilizing perovskite-substrate interfaces for high-performance perovskite modules.
TL;DR: In this paper, the authors found that dimethyl sulfoxide (DMSO) was trapped during film formation and led to voids at perovskite-substrate interfaces that accelerated the film degradation under illumination.
Journal ArticleDOI
Defect Passivation in Lead-Halide Perovskite Nanocrystals and Thin Films: Toward Efficient LEDs and Solar cells
Junzhi Ye,Mahdi Malekshahi Byranvand,Mahdi Malekshahi Byranvand,Clara Otero Martínez,Robert L. Z. Hoye,Michael Saliba,Michael Saliba,Lakshminarayana Polavarapu +7 more
TL;DR: In this paper, the current understanding of defects in halide perovskites and their influence on the optical and charge-carrier transport properties is presented, and passivation strategies toward improving the efficiencies of perov-skite-based LEDs and solar cells are also discussed.
Journal ArticleDOI
Perovskite light-emitting diodes
Azhar Fakharuddin,Mahesh K. Gangishetty,Mojtaba Abdi-Jalebi,Sang-Hyun Chin,Abd. Rashid bin Mohd Yusoff,Daniel N. Congreve,Wolfgang Tress,Felix Deschler,Maria Vasilopoulou,Henk J. Bolink +9 more
TL;DR: In this paper , a review of the development of perovskite light-emitting diodes is presented, exploring the key challenges involved in creating efficient and stable devices.
Journal ArticleDOI
Shallow Iodine Defects Accelerate the Degradation of α-Phase Formamidinium Perovskite
Shaun Tan,Ilhan Yavuz,Marc H. Weber,Tianyi Huang,Chung Hao Chen,Chung Hao Chen,Rui Wang,Hao Cheng Wang,Hao Cheng Wang,Jeong Hoon Ko,Selbi Nuryyeva,Jingjing Xue,Yepin Zhao,Kung-Hwa Wei,Jin-Wook Lee,Yang Yang +15 more
TL;DR: In this article, the authors show that shallow iodine interstitial defects (I i ) can be generated unintentionally during commonly used post-fabrication treatments, which can lower the cubic-to-hexagonal transformation barrier of FAPbI3-based perovskites to accelerate its phase degradation.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%
Hui-Seon Kim,Chang-Ryul Lee,Jeong-Hyeok Im,Ki Beom Lee,Thomas Moehl,Arianna Marchioro,Soo-Jin Moon,Robin Humphry-Baker,Jun-Ho Yum,Jacques-E. Moser,Michael Grätzel,Nam-Gyu Park +11 more
TL;DR: The use of a solid hole conductor dramatically improved the device stability compared to (CH3NH3)PbI3 -sensitized liquid junction cells.
Journal ArticleDOI
Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
Woon Seok Yang,Byung-wook Park,Eui Hyuk Jung,Nam Joong Jeon,Young Chan Kim,Dong Uk Lee,Seong Sik Shin,Jangwon Seo,Eun Kyu Kim,Jun Hong Noh,Sang Il Seok +10 more
TL;DR: The introduction of additional iodide ions into the organic cation solution, which is used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects, enabling the fabrication of PSCs with a certified power conversion efficiency.
Journal ArticleDOI
Surface passivation of perovskite film for efficient solar cells
Qi Jiang,Yang Zhao,Xingwang Zhang,Xiaolei Yang,Yong Chen,Zema Chu,Qiufeng Ye,Li Xingxing,Zhigang Yin,Jingbi You +9 more
TL;DR: In this paper, an organic halide salt phenethylammonium iodide (PEAI) was used on HC(NH2)2-CH3NH3 mixed perovskite films for surface defect passivation.
Book
Thermodynamics and an Introduction to Thermostatics
TL;DR: The Canonical Formalism Statistical Mechanics in the Entropy Representation as discussed by the authors is a generalization of statistical mechanics in the Helmholtz Representation, and it has been applied to general systems.