Featured
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Enhancing the efficiency and stability of blue thermally activated delayed fluorescence emitters by perdeuteration
Molecular perdeuteration of thermally activated delayed fluorescence emitters improves the performance of blue organic light-emitting diodes, enabling a peak external quantum efficiency of 33.1% and a device lifetime to reach 80% of initial luminance of over 1,300 h.
- Tianyu Huang
- , Qi Wang
- & Lian Duan
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News & Views |
New nonlinear opportunities in the ultraviolet
A nonlinear optical crystal permits harmonic generation of coherent radiation deep into the ultraviolet, reaching below 200 nm.
- P. Shiv Halasyamani
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Article |
Achieving the full-wavelength phase-matching for efficient nonlinear optical frequency conversion in C(NH2)3BF4
A new nonlinear optical crystal offers efficient harmonic generation in the ultraviolet and deep-ultraviolet regions.
- Miriding Mutailipu
- , Jian Han
- & Shilie Pan
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Letter
| Open Access
Sensitive near-infrared circularly polarized light detection via non-fullerene acceptor blends
Non-fullerene acceptors open the way to sensitive organic photodetectors for detecting circularly polarized near-infrared light.
- Li Wan
- , Rui Zhang
- & Feng Gao
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Article
| Open Access
Brilliant whiteness in shrimp from ultra-thin layers of birefringent nanospheres
The strong birefringence of liquid crystalline nanospheres in the body of the Pacific cleaner shrimp enables brilliant whiteness by overcoming undesirable optical crowding effects.
- Tali Lemcoff
- , Lotem Alus
- & Benjamin A. Palmer
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Article |
High-yield growth of FACsPbBr3 single crystals with low defect density from mixed solvents for gamma-ray spectroscopy
Centimetre-sized formamidinium-caesium lead bromide (FACsPbBr3) single crystals were grown at high yield from low-purity precursors. High (84%) charge collection efficiency and energy resolution (2.9% for 662 keV 137Cs) for γ-rays were demonstrated.
- Liang Zhao
- , Ying Zhou
- & Jinsong Huang
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News & Views |
Chiral quantum optics goes electric
The local polarization of light in nanophotonic waveguides changes with the light’s direction of propagation. By electrically controlling the polarization of optically created waveguide-coupled excitons in a two-dimensional semiconductor, researchers demonstrate voltage-controlled routing of photons in an integrated nanophotonic device.
- Arno Rauschenbeutel
- & Philipp Schneeweiss
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Suppression of temperature quenching in perovskite nanocrystals for efficient and thermally stable light-emitting diodes
Fluoride-treated CsPbBr3 nanocrystals emit light with near unity efficiency at temperatures of up to 373 K.
- Mingming Liu
- , Qun Wan
- & Liang Li
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Letter |
Stable pure-blue hyperfluorescence organic light-emitting diodes with high-efficiency and narrow emission
Pure-blue organic LEDs with narrow emission and improved stability show promise for display applications.
- Chin-Yiu Chan
- , Masaki Tanaka
- & Chihaya Adachi
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Efficient and stable organic light-emitting devices employing phosphorescent molecular aggregates
A tetradentate Pd(ii) complex with near unity photoluminescent quantum yield is the basis of bright, long-lifetime organic LEDs.
- Linyu Cao
- , Kody Klimes
- & Jian Li
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Article |
NIR II-responsive photon upconversion through energy migration in an ytterbium sublattice
An ytterbium sublattice in an erbium-sensitized multilayer core–shell structure enables photon upconversion from lanthanide ions under 1,530 nm irradiation.
- Bo Zhou
- , Long Yan
- & Qinyuan Zhang
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News & Views |
Molecular designs offer fast exciton conversion
Two independent studies report new organic compounds that offer record rates of reverse intersystem crossing between triplet and singlet excited states. The result is sky-blue organic light-emitting diodes with improved efficiency, stability and reduced efficiency roll-off.
- Eli Zysman-Colman
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Article |
Organic light emitters exhibiting very fast reverse intersystem crossing
An organic molecule, TpAT-tFFO, which is designed to support rapid reverse intersystem crossing allows the fabrication of efficient organic light-emitting diodes.
- Yoshimasa Wada
- , Hiromichi Nakagawa
- & Hironori Kaji
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Letter |
Narrowband deep-blue organic light-emitting diode featuring an organoboron-based emitter
A blue emitter based on thermally activated delayed fluorescence is narrowband and efficient.
- Yasuhiro Kondo
- , Kazuki Yoshiura
- & Takuji Hatakeyama
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Hydroxypropyl cellulose photonic architectures by soft nanoimprinting lithography
Biodegradable cellulose-based photonic and plasmonic architectures are fabricated via soft nanoimprinting lithography, and are used for structural colour generation, photoluminescence enhancement and as disposable surface-enhanced Raman scattering substrates.
- André Espinha
- , Camilla Dore
- & Agustín Mihi
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Article |
Diboron compound-based organic light-emitting diodes with high efficiency and reduced efficiency roll-off
Organic light-emitting diodes featuring the compounds CzDBA and tBuCzBDA are shown to not only offer high external quantum efficiency, but also minimal reduction in performance at high brightness.
- Tien-Lin Wu
- , Min-Jie Huang
- & Chien-Hong Cheng
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Letter |
Spatially segregated free-carrier and exciton populations in individual lead halide perovskite grains
A study of single grains of lead halide perovskite reveals the presence of both excitons and free charge carriers.
- S. Nah
- , B. Spokoyny
- & E. Harel
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Letter |
Solution-processed organic tandem solar cells with power conversion efficiencies >12%
Careful selection of small-molecule materials provides solution-processed tandem organic solar cells with a boost in efficiency.
- Miaomiao Li
- , Ke Gao
- & Yongsheng Chen
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Interview |
Flat talk
Fengnian Xia from Yale University shares his opinions with Nature Photonics on the status of research into 2D materials and their prospects for commercial applications.
- Rachel Won
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Article |
Bulk heterojunction perovskite–PCBM solar cells with high fill factor
Bulk heterojunction perovskite solar cells with a high fill factor are reported.
- Chien-Hung Chiang
- & Chun-Guey Wu
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Efficient inverted polymer solar cells employing favourable molecular orientation
Molecular orientation in polymer solar cells is shown to play an important role in device performance.
- Varun Vohra
- , Kazuaki Kawashima
- & Hideyuki Murata
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Perovskite solar cells with a planar heterojunction structure prepared using room-temperature solution processing techniques
The use of a thin layer of zinc oxide nanoparticles as an electron-transport layer allows flexible perovskite solar cells to be fabricated with a power conversion efficiency as high as 15.7%.
- Dianyi Liu
- & Timothy L. Kelly
Chiral materials and mechanisms for circularly polarized light-emitting diodes
Supercrystal creation
Combating colour blindness