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Oct 14, 2024 | 
nature.com | Rui Su |RUI ZHU |Deying Luo |Pengru Huang |Linjie Dai |Pietro Caprioglio | +16 more
AbstractObtaining micron-thick perovskite films of high quality is key to realizing efficient and stable positive (p)-intrinsic (i)-negative (n) perovskite solar cells1,2, but it remains a critical challenge. Here, we report an effective method for producing high-quality, micron-thick formamidinium-based perovskite films by forming coherent grain boundaries, where high-Miller-index-oriented grains grow on the low-Miller-index-oriented grains in a stabilized atmosphere.
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Sep 18, 2024 | 
nature.com | Xi Wang |Xinxing Yin |Kangyu Ji |Linjie Dai |Haoming Liang |Xiangkun Jia | +5 more
AbstractHeterogeneity in transporting interfaces and perovskites poses a substantial challenge in improving the efficiency of perovskite solar cells from small to large scales, a key barrier to their commercial use. Here we find that the amorphous phases of self-assembling molecules (SAMs) can realize a more homogeneous perovskite growth.
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Sep 15, 2024 | 
nature.com | Junzhi Ye |Navendu Mondal |Ben P. Carwithen |Linjie Dai |Jian Qiang Mao |Pratyush Ghosh | +8 more
AbstractDefect tolerance is a critical enabling factor for efficient lead-halide perovskite materials, but the current understanding is primarily on band-edge (cold) carriers, with significant debate over whether hot carriers can also exhibit defect tolerance. Here, this important gap in the field is addressed by investigating how intentionally-introduced traps affect hot carrier relaxation in CsPbX3 nanocrystals (X = Br, I, or mixture).
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Jun 25, 2024 | 
nature.com | Lingmei Kong |Yuqi Sun |Kangyu Ji |Yunguo Li |Yingguo Yang |Linjie Dai | +5 more
Correction to: Nature https://doi.org/10.1038/s41586-024-07531-9 Published online 12 June 2024In the version of the article initially published, the x axis of Fig. 3e originally began at “10–2” which has now been amended to “10–1” in the HTML and PDF versions of the article. About this articleKong, L., Sun, Y., Zhao, B. et al. Publisher Correction: Fabrication of red-emitting perovskite LEDs by stabilizing their octahedral structure. Nature (2024).
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Jun 12, 2024 | 
nature.com | Lingmei Kong |Yuqi Sun |Kangyu Ji |Yunguo Li |Yingguo Yang |Linjie Dai | +5 more
AbstractLight-emitting diodes (LEDs) based on metal halide perovskites (PeLEDs) with high colour quality and facile solution processing are promising candidates for full-colour and high-definition displays1,2,3,4. Despite the great success achieved in green PeLEDs with lead bromide perovskites5, it is still challenging to realize pure-red (620–650 nm) LEDs using iodine-based counterparts, as they are constrained by the low intrinsic bandgap6.
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May 8, 2024 | 
nature.com | Linfeng Pan |Linjie Dai |Lu Chen |Virgil Andrei |Youcheng Zhang |Dan Ren | +9 more
Correction to: Nature https://doi.org/10.1038/s41586-024-07273-8 Published online 24 April 2024In the version of the article initially published, Linfeng Pan and Linjie Dai were not named as equal contributors. This has now been corrected in the HTML and PDF versions of the article.
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Apr 24, 2024 | 
nature.com | Linfeng Pan |Linjie Dai |Lu Chen |Virgil Andrei |Youcheng Zhang |Dan Ren | +9 more
AbstractSolar fuels offer a promising approach to provide sustainable fuels by harnessing sunlight1,2. Following a decade of advancement, Cu2O photocathodes are capable of delivering a performance comparable to that of photoelectrodes with established photovoltaic materials3,4,5. However, considerable bulk charge carrier recombination that is poorly understood still limits further advances in performance6.
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Feb 23, 2024 | 
nature.com | Junzhi Ye |Aobo Ren |Linjie Dai |Tomi K. Baikie |Renjun Guo |Sebastian Gorgon | +16 more
AbstractPolarized light is critical for a wide range of applications, but is usually generated by filtering unpolarized light, which leads to substantial energy losses and requires additional optics. Here we demonstrate the direct emission of linearly polarized light from light-emitting diodes made of CsPbI3 perovskite nanoplatelet superlattices.
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Jan 26, 2024 | 
nature.com | Shuai Yuan |Linjie Dai |Yuqi Sun |Florian Auras |Yun Liu |Cathal Cassidy | +10 more
AbstractPerovskite light-emitting diodes (LEDs) show promises for next-generation displays owing to their excellent luminescent properties and low cost. Despite substantial progress with green- and red-emitting devices, the development of efficient blue perovskite LEDs has lagged behind.
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Aug 30, 2023 | 
nature.com | Linjie Dai |Junzhi Ye |Neil C. Greenham
AbstractUnderstanding and control of ultrafast non-equilibrium processes in semiconductors is key to making use of the full photon energy before relaxation, leading to new ways to break efficiency limits for solar energy conversion. In this work, we demonstrate the observation and modulation of slow relaxation in uniformly mixed tin-lead perovskites (MASnxPb1-xI3 and CsSnxPb1-xI3 nanocrystals).
