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Optical and Optoelectric Properties of PbCdS Ternary Thin Films Deposited by CBD
Modaffer. A. Mohammed,Ali M. Mousa,J. P. Ponpon 대한전자공학회 2009 Journal of semiconductor technology and science Vol.9 No.2
PbxCd1-xS films are prepared in the composition range of 0.05≤x≤0.25, using a chemical bath deposition growth technique under optimum conditions amide at realizing good photo response. The x-ray diffraction results show that the films are of PbS-CdS composite with individual CdS and PbS planes. The films exhibit two direct band gaps, 2.4 eV attributed to CdS, while the other varies continuously from 2.4 eV to 1.3 eV. The films surface morphology is smooth with crystallite, whose grain size increases with increasing mole fraction (x). The decrease in band gap with increase in lead concentration suggests inter-metallic compound of PbS (Eg=0.41 eV) with CdS (Eg=2.4 eV)
Optical and Optoelectric Properties of PbCdS Ternary Thin Films Deposited by CBD
Mohammed, Modaffer. A.,Mousa, Ali M.,Ponpon, J.P. The Institute of Electronics and Information Engin 2009 Journal of semiconductor technology and science Vol.9 No.2
$Pb_{x}Cd_{1-x}S$ films are prepared in the composition range of 0.05${\leq}x{\leq}$0.25, using a chemical bath deposition growth technique under optimum conditions amide at realizing good photo response. The x-ray diffraction results show that the films are of PbS-CdS composite with individual CdS and PbS planes. The films exhibit two direct band gaps, 2.4 eV attributed to CdS, while the other varies continuously from 2.4 eV to 1.3 eV. The films surface morphology is smooth with crystallite, whose grain size increases with increasing mole fraction (x). The decrease in band gap with increase in lead concentration suggests inter-metallic compound of PbS (Eg=0.41 eV) with CdS (Eg=2.4 eV)
Hoover-Fong, J.,Sobreira, N.,Jurgens, J.,Modaff, P.,Blout, C.,Moser, A.,Kim, O.H.,Cho, T.J.,Cho, S.,Kim, S.,Jin, D.K.,Kitoh, H.,Park, W.Y.,Ling, H.,Hetrick, Kurt N.,Doheny, Kimberly F.,Valle, D.,Pauli University of Chicago Press [etc.] 2014 American journal of human genetics Vol.94 No.1
Spondylometaphyseal dysplasias (SMD) constitute a rare group of bone disorders. Two members of the SMD group have distinctive ophthalmologic manifestations: SMD with cone-rod dystrophy (SMD-CRD; MIM 608940) and axial SMD with retinal degeneration (MIM 602271). Additional features of SMD-CRD include rhizomelia, lower extremity bowing, evolving anterior vertebral protrusions, metaphyseal cupping, and progressive visual impairment with pigmentary maculopathy and electroretinographic evidence of cone-rod dysfunction. Affected siblings have been described, thus suggesting autosomal recessive inheritance. Here eight individuals from 6 unrelated families with SMD-CRD were submitted to the Baylor-Hopkins Center for Mendelian Genomics (BHCMG). Patients 1, 2, 4-6 (Walters et al, 2004) and 7 (Kitoh et al, 2011) were described previously. Patient 8 has not reached final adult height, but is short for his age (Z=-7.6) with lower extremity bowing and diagnosis of retinal dystrophy affecting both cones and rods made at age 45 months. Using WES and targeted Sanger sequencing, we found 8 rare PCYT1A variants (1 nonsense, 1 frame shifting indel, and 6 missense variants) present either in the homozygous or compound heterozygous state in all 8 individuals. PCYT1A encodes the alpha isoform of an enzyme known as CTP (phosphocholine cytidylytransferase), essential for phosphotidylcholine synthesis. Mutations in genes involved in fatty acid metabolism have been implicated in other dysplasias (e.g. RCDP and Conradi-Hunermann), as well as retinal disease where there are deficient or abnormal fatty acids (e.g. eicosapentanoic and docosahexanoic acid). Further examination of phospholipid metabolism may lead to the genetic etiology of other SMDs, particularly those with ocular manifestations.