Journal ArticleDOI
Enhancing Charge Carrier Delocalization in Perovskite Quantum Dot Solids with Energetically Aligned Conjugated Capping Ligands
Evan T. Vickers,Emily E. Enlow,William Delmas,Albert DiBenedetto,Ashraful Haider Chowdhury,Behzad Bahrami,Benjamin W. Dreskin,Thomas A. Graham,Isaak N. Hernandez,Isaak N. Hernandez,Sue A. Carter,Sayantani Ghosh,Qiquan Qiao,Jin Z. Zhang +13 more
TLDR
In this paper, an energy-aligned capping ligand was used to accelerate charge transport in perovskite quantum dot (PQD) solids, where the ligands were used to prepare methylammonium le...Abstract:
Compared to bulk perovskites, charge transport in perovskite quantum dot (PQD) solids is limited. To address this issue, energetically aligned capping ligands were used to prepare methylammonium le...read more
Citations
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Journal ArticleDOI
Dual Passivation of CsPbI3 Perovskite Nanocrystals with Amino Acid Ligands for Efficient Quantum Dot Solar Cells.
Donglin Jia,Jingxuan Chen,Mei Yu,Jianhua Liu,Erik M. J. Johansson,Anders Hagfeldt,Xiaoliang Zhang +6 more
TL;DR: The amino acids are used as dual-passivation ligands to passivate the surface defects of CsPbI3 PQDs using a facile single-step ligand exchange strategy and reveal that the glycine ligand can significantly improve defect passivation of PQds and therefore diminish charge carrier recombination in the PQD solid.
Journal ArticleDOI
Recent Advances in Synthesis, Properties, and Applications of Metal Halide Perovskite Nanocrystals/Polymer Nanocomposites
Shuang Liang,Mingyue Zhang,Gill M. Biesold,Woosung Choi,Yanjie He,Zili Li,Dingfeng Shen,Zhiqun Lin +7 more
TL;DR: The metal-halide perovskite nanocrystals (PNCs) have recently garnered tremendous research interest due to their unique optoelectronic properties and promising applications in photovoltaics and optical fiber.
Journal ArticleDOI
Approaching high-performance light-emitting devices upon perovskite quantum dots: Advances and prospects
TL;DR: In this article , a comprehensive review of recent advances towards high-performance PQD-LEDs, including the progress in preparation modification, surface engineering and composition regulation of PQDs, as well as the device architecture optimization, is presented, accompanied by potential corresponding countermeasures and future development prospects.
Journal ArticleDOI
Optimizing Surface Chemistry of PbS Colloidal Quantum Dot for Highly Efficient and Stable Solar Cells via Chemical Binding.
Long Hu,Long Hu,Qi Lei,Xinwei Guan,Robert Patterson,Jianyu Yuan,Chun-Ho Lin,Jiyun Kim,Xun Geng,Adnan Younis,Xianxin Wu,Xinfeng Liu,Tao Wan,Dewei Chu,Tom Wu,Shujuan Huang,Shujuan Huang +16 more
TL;DR: In this article, the surface chemistry of colloidal quantum dots (CQD) play a crucial role in fabricating highly efficient and stable solar cells, and the implementation of KI3 additives remarkably suppresses the surface trap states and enhances the device stability due to surface chemistry optimization.
Journal ArticleDOI
Tailoring charge transfer in perovskite quantum dots/black phosphorus nanosheets photocatalyst via aromatic molecules
TL;DR: In this article, short-chain conductive aromatic molecules benzylamine (BZA) and benzoic acid (BA) were employed to passivate CsPbBr3 QDs and to serve as charge mediators for the first time.
References
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Journal ArticleDOI
Electron–electron and electron‐hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state
TL;DR: In this paper, the excited electronic states of semiconductor crystallites sufficiently small (∼50 A diam) that the electronic properties differ from those of bulk materials were modeled, and an approximate formula was given for the lowest excited electronic state energy.
Journal ArticleDOI
Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency
Michael Saliba,Taisuke Matsui,Ji-Youn Seo,Konrad Domanski,Juan-Pablo Correa-Baena,Mohammad Khaja Nazeeruddin,Shaik M. Zakeeruddin,Wolfgang Tress,Antonio Abate,Anders Hagfeldt,Michael Grätzel +10 more
TL;DR: In this paper, the triple cation perovskite photovoltaics with inorganic cesium were shown to be thermally more stable, contain less phase impurities and are less sensitive to processing conditions.
Journal ArticleDOI
Halide Perovskite Photovoltaics: Background, Status, and Future Prospects
TL;DR: The fundamentals, recent research progress, present status, and views on future prospects of perovskite-based photovoltaics, with discussions focused on strategies to improve both intrinsic and extrinsic (environmental) stabilities of high-efficiency devices are described.
Journal ArticleDOI
Intriguing Optoelectronic Properties of Metal Halide Perovskites
TL;DR: This review is a critical account of the interrelation between MHP electronic structure, absorption, emission, carrier dynamics and transport, and other relevant photophysical processes that have propelled these materials to the forefront of modern optoelectronics research.
Journal ArticleDOI
Nontemplate Synthesis of CH3NH3PbBr3 Perovskite Nanoparticles
Luciana C. Schmidt,Antonio Pertegás,Soranyel Gonzalez-Carrero,Olga Malinkiewicz,Said Agouram,Guillermo Mínguez Espallargas,Henk J. Bolink,Raquel E. Galian,Julia Pérez-Prieto +8 more
TL;DR: This work reports the preparation of 6 nm-sized nanoparticles of this type by a simple and fast method based on the use of an ammonium bromide with a medium-sized chain that keeps the nanoparticles dispersed in a wide range of organic solvents.