Journal ArticleDOI
All-inorganic perovskite quantum dots as light-harvesting, interfacial, and light-converting layers toward solar cells
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TLDR
In this article, the authors focus on the latest development of all-inorganic perovskite quantum dots (AIPQDSCs) and analyze the current bottlenecks they are facing.Abstract:
Solution-processed colloidal lead halide perovskite quantum dots (QDs) are considered one of the promising candidates for next-generation photovoltaics (PVs) due to the excellent optoelectronic properties and low-cost synthetic process. In particular, all-inorganic perovskite (AIP) QDs exhibit better prospects due to their better stability. Although remarkable breakthroughs have been made in bulk perovskite solar cells (SCs), the AIP QD-based SCs (AIPQDSCs) are still on their way to catch up. A lot of reports have summarized the development of perovskite SCs, but few have focused on AIPQDSCs. In this review, we focus on the latest development of AIPQDSCs, and analyze the current bottlenecks they are facing. Also, various optimization means have been discussed to improve the performance of AIPQDSCs from two perspectives of QD materials and device structure, including compositional regulation, surface engineering, interface engineering, and optimization of the carrier transport layer. In addition, AIP QDs as converter for SCs are also presented. Since the stability of perovskite SCs is currently the most pressing issue, the device stability is also highlighted. In the end, a brief summary and perspectives are presented to look forward to the future development of AIPQDSCs.read more
Citations
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CsPbBr3 quantum dots enhanced ZnO sensing to NO2 at room temperature
TL;DR: In this article , a gas sensor based on the composites of CsPbBr3 quantum dots (QDs) and ZnO microballs (MBs) was demonstrated for NO2 detection at room temperature.
Journal ArticleDOI
Lead Halide Perovskite Quantum Dots for Photovoltaics and Photocatalysis: A Review
TL;DR: In this article , a review of PQD solar cells and photocatalytic conversion is presented, highlighting that the improvement of the efficiency from below 10% to beyond 16% in a matter of a few years has turned them into promising candidates for future SC applications.
Journal ArticleDOI
Cesium Lead Iodide Perovskites: Optically Active Crystal Phase Stability to Surface Engineering
Yixiong Wang,Hairong Zhao,Marek Piotrowski,Xiao Han,Zhongsheng Ge,Lizhuang Dong,Chengjie Wang,Sowjanya Krishna Pinisetty,Praveen Kumar Balguri,Anil Kumar Bandela,Udayabhaskararao Thumu +10 more
TL;DR: In this article , a review of surface and lattice engineering in CsPbI3-based perovskites is presented, highlighting the superiority of CspbII3 over other halide systems, stability, the factors leading to their phase transformations, and electronic band structure along with the important property of the defect tolerance nature.
Journal ArticleDOI
Enhancing oxygen/moisture resistance of quantum dots by short-chain, densely cross-linked silica glass network
TL;DR: Wang et al. as mentioned in this paper proposed a new QDs protection strategy by introducing short-chain silica precursors onto the QDs surface, so that a dense silica passivation layer could be formed onto QDs nanoparticles.
Journal ArticleDOI
Recent Progress on Boosting the Perovskite Film Quality of All-Inorganic Perovskite Solar Cells
TL;DR: In this paper , a review systematically summarizes additive engineering, solvent engineering, and interface engineering methods to promote the thin film property for a high power conversion efficiency (PCE) in recent years.
References
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Journal ArticleDOI
Targeted Ligand-Exchange Chemistry on Cesium Lead Halide Perovskite Quantum Dots for High-Efficiency Photovoltaics
Lance M. Wheeler,Erin M. Sanehira,Erin M. Sanehira,Ashley R. Marshall,Ashley R. Marshall,Philip Schulz,Philip Schulz,Mokshin Suri,Nicholas C. Anderson,Jeffrey A. Christians,Dennis Nordlund,Dimosthenis Sokaras,Thomas Kroll,Steven P. Harvey,Joseph J. Berry,Lih Y. Lin,Joseph M. Luther +16 more
TL;DR: In this work, a variety of spectroscopic techniques are employed to develop a molecular-level understanding of the MHP QD surface chemistry, providing chemical understanding to the deposition of high-quality, electronically coupled MHPQD films that maintain both quantum confinement and their crystalline phase and attain high photovoltaic performance.
Journal ArticleDOI
Performance Enhancement of Lead-Free Tin-Based Perovskite Solar Cells with Reducing Atmosphere-Assisted Dispersible Additive
TL;DR: In this paper, the authors used excess tin iodide (SnI2) in Sn-based halide perovskite solar cells (ASnI3, A = Cs, methylammonium, and formamidinium Tin iodide) combined with a reducing atmosphere to stabilize the Sn2+ state.
Journal ArticleDOI
Hysteresis-less mesoscopic CH3NH3PbI3 perovskite hybrid solar cells by introduction of Li-treated TiO2 electrode
Jin Hyuck Heo,Myoung Sang You,Min Hyuk Chang,Wenping Yin,Tae Kyu Ahn,Sang-Ju Lee,Shi-Joon Sung,Dae-Hwan Kim,Sang Hyuk Im +8 more
TL;DR: In this paper, Li-treatment of mesoscopic TiO 2 electrode improved charge separation/injection from MAPbI 3 into mesoscopicTiO 2, charge transport in mesoscopic TIO 2, and surface traps.
Journal ArticleDOI
Near‐Unity Photoluminescence Quantum Efficiency for All CsPbX 3 (X=Cl, Br, and I) Perovskite Nanocrystals: A Generic Synthesis Approach
TL;DR: In a generic synthesis approach, all three CsPbX3 (X=Cl, Br and I) perovskite nanocrystals having near unity quantum yields is reported.
Journal ArticleDOI
Band-Aligned Polymeric Hole Transport Materials for Extremely Low Energy Loss α-CsPbI3 Perovskite Nanocrystal Solar Cells
Jianyu Yuan,Xufeng Ling,Di Yang,Fangchao Li,Sijie Zhou,Junwei Shi,Yuli Qian,Jiaxin Hu,Yuansheng Sun,Yingguo Yang,Xingyu Gao,Steffen Duhm,Qiao Zhang,Wanli Ma +13 more
TL;DR: In this article, a CsPbI3 perovskite quantum dot (QD) solar cells with a remarkable efficiency approaching 13% and an extremely low energy loss of 0.45 eV by employing a series of dopant-free polymeric hole-transporting materials (HTMs).