Journal ArticleDOI
Phase Stabilized α-CsPbI3 Perovskite Nanocrystals for Photodiode Applications
TLDR
In this paper, high performance and high reliability photodiodes are demonstrated by using α-CsPbI3 perovskite nanocrystals (NCs) phase-stabilized with a low-temperature solution-treated active layer.Abstract:
High-performance and high-reliability photodiodes are demonstrated by using α-CsPbI3 perovskite nanocrystals (NCs) phase-stabilized with a low-temperature solution-treated active layer. In addition to the high charge mobility, the high absorption coefficient, and IR-blind characteristics of the perovskite material, the defect-tolerant nature of α-CsPbI3 perovskite NCs are combined to realize hysteresis-free and high detectivity photodiodes. To further minimize interface defects originating from multi-layer photodiode construction, a poly(3-hexylthiophene) layer is strategically introduced as a passivation and electron blocking layer, resulting in a low diode ideality factor of 1.5 and a noise equivalent power of 1.6 × 10−13 W Hz−0.5. As a result, high detectivity of 1.8 × 1012 Jones is demonstrated with near-zero hysteresis. Furthermore, the optimized photodiode exhibits excellent stability under high humidity conditions owing to the intrinsic nature of the defect-tolerant α-CsPbI3 perovskite NCs.read more
Citations
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Journal ArticleDOI
Can B-Site Doping or Alloying Improve Thermal- and Phase-Stability of All-Inorganic CsPbX3 (X = Cl, Br, I) Perovskites?
Journal ArticleDOI
All-inorganic cesium lead iodide perovskite solar cells with stabilized efficiency beyond 15
Kang Wang,Zhiwen Jin,Zhiwen Jin,Lei Liang,Hui Bian,Dongliang Bai,Haoran Wang,Jingru Zhang,Qian Wang,Qian Wang,Shengzhong Liu,Shengzhong Liu +11 more
TL;DR: A distorted black CsPbI3 film is reported by exploiting the synergistic effect of hydroiodic acid and phenylethylammonium iodide additives to achieve device efficiency beyond 15% with high light soaking stability.
Journal ArticleDOI
Recent progress on highly sensitive perovskite photodetectors
Jianli Miao,Fujun Zhang +1 more
TL;DR: In this paper, the authors summarized the recent progress on emerging perovskite photodetectors from the perspective of device physics and materials science and investigated the strategies for extending the spectral response range of PPDs and improving the performance of devices.
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
Doping and ion substitution in colloidal metal halide perovskite nanocrystals.
TL;DR: The doping and ion substitution processes can be performed during or after the synthesis of colloidal nanocrystals by incorporating new A', B', or X' site ions into the A, B, or X sites of ABX3 perovskites.
References
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Journal ArticleDOI
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
TL;DR: The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.
Journal ArticleDOI
Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells
Giles E. Eperon,Samuel D. Stranks,Christopher Menelaou,Michael B. Johnston,Laura M. Herz,Henry J. Snaith +5 more
TL;DR: In this article, the effect of replacing the methylammonium cation in this perovskite was explored, and it was shown that with the slightly larger formamidinium lead trihalide cation, one can synthesise a peroviscite with a bandgap tunable between 1.48 and 2.23 eV.
Journal ArticleDOI
Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics.
Abhishek Swarnkar,Abhishek Swarnkar,Ashley R. Marshall,Ashley R. Marshall,Erin M. Sanehira,Erin M. Sanehira,Boris D. Chernomordik,David T. Moore,Jeffrey A. Christians,Tamoghna Chakrabarti,Joseph M. Luther +10 more
TL;DR: N nanoscale phase stabilization of CsPbI3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices and describe the formation of α-CsP bI3 QD films that are phase-stable for months in ambient air.
Journal ArticleDOI
Solution-processed hybrid perovskite photodetectors with high detectivity
TL;DR: The results indicate that with proper device interface design, perovskite materials are promising candidates for low-cost, high-performance photodetectors.
Journal ArticleDOI
Atomistic Origins of High-Performance in Hybrid Halide Perovskite Solar Cells
Jarvist M. Frost,Keith T. Butler,Federico Brivio,Christopher H. Hendon,Mark van Schilfgaarde,Aron Walsh +5 more
TL;DR: The performance of organometallic perovskite solar cells has rapidly surpassed that of both conventional dye-sensitized and organic photovoltaics as discussed by the authors, which can be realized in both mesoporous and thin-film device architectures.