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Lead halide perovskites have gained extensive attention in the photodetectors (PDs) field, but the problems of intrinsic toxicity and poor stability still hamper their practical applications. Furthermore, ultraviolet (UV) PDs have rarely been explored due to challenges, including the lack of suitable materials and the costly and complicated fabrication processes. In order to solve the above problems, herein it is reported a novel all‐inorganic lead‐free halide CsAg2I3 single crystal (SC) with pure phase and high quality. This CsAg2I3 SC shows ultra‐stable crystal structure, steady chemical properties, and good optical properties, and it can be stable up to 893 K. Its 1D crystal structure and soft crystal lattice support the formation of self‐trapped excitons, leading to a broadband emission at 610 nm with a large Stokes shift of 315 nm (2.23 eV). The strong absorption for UV light combined with direct bandgap, large Stokes shift, and ultra‐high stability promises an environment‐friendly, low‐cost, and high‐performance UV PD based on the 1D all‐inorganic silver (I) halides. [ABSTRACT FROM AUTHOR]

A compound current cell, with n-type, p-type, and bipolar properties, is proposed in this brief and utilized in a current-steering digital-to-analog converter (DAC) to satisfy the application of rail-to-rail voltage sources. In addition, the DAC with cells also has a high-speed fashion. Therefore, this brief presents a 6-bit CMOS current-steering DAC with cells for both communication and rail-to-rail voltage-source applications. Moreover, the effective output voltage step size is improved by appropriately switching these cells and connecting one of the gain control resisters, resulting in an about 6.4-mV step size in a 1.2-V supply. Furthermore, this DAC was implemented in a standard low-power 90-nm 1P9M CMOS technology with the active area of 0.045 \mm^2. The measured spurious-free dynamic range is more than 36 dB over the Nyquist frequency at 3 GS/s and the DAC consumes 8.32 mW with a near-Nyquist sinusoidal output at the sampling rate of 3 GS/s. [ABSTRACT FROM AUTHOR]

Jacaranda mimosifolia is a deciduous arbor with blue flowers native to Brazil, Bolivia, and Argentina in South America. After introduction from South America, it was widely cultivated as a garden ornamental plant in South China. The complete chloroplast (cp) genome sequence of this ornamental species is reported in this study, based on high-throughput sequencing (Illumina). The complete cp genome is 153,514 bp in length, containing a pair of inverted repeat regions (IRs) of 25,408 bp, a large single-copy (LSC) region of 84,755 bp, and a small single-copy (SSC) region of 17,943 bp. The cp genome contains 130 genes, consisting of 85 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The overall A/T content in the cp genome of J. mimosifolia is 61.70%. The phylogenetic analyses indicate that there is a close relationship between J. mimosifolia and Tecomaria capensis. The complete cp sequence of J. mimosifolia will provide a useful resource for the development and utilization of this species as well as for the phylogenetic studies in Bignoniaceae. [ABSTRACT FROM AUTHOR]