Study of the characteristics of ohmic contact between metal electrodes and Cu 2 ZnSnS 4 thin films

Micro & nano letters

article

Bo Long¹  Sile Lin¹  Walter Nsengiyumva¹  Lingyan Lin² 

[1] College of Mechanical and Electrical Engineering, Fujian Agriculture and Forestry University;College of Electronic Information Science, Fujian Jiangxia University

关键词: ohmic contacts;    electrodes;    semiconductor thin films;    vacuum deposition;    X-ray diffraction;    Raman spectra;    scanning electron microscopy;    X-ray chemical analysis;    copper compounds;    zinc compounds;    tin compounds;    silver;    indium;    aluminium;    titanium;    ohmic contact;    metal electrodes;    thin films;    CZTS devices;    p-type CZTS films;    thermal evaporation;    sulphurisation;    XRD;    Raman;    SEM;    EDX;    I–V characterisation system;    Cu2ZnSnS4-Ag;    Cu2ZnSnS4-In;    Cu2ZnSnS4-Al;    Cu2ZnSnS4-Ti;   

DOI  :  10.1049/mnl.2017.0274

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background:  The incidence of malignant peripheral nerve sheath tumours (MPNST) in patients with neurofibromatosis 1 (NF1) is significantly higher than that of the general population. NF1-associated MPNST occur at a younger age and carry a worse prognosis than sporadic MPNST. Aim:  This case series describes four cases of MPNST in patients with NF1. Setting:  The study was performed in a public academic hospital in the Western Cape province of South Africa. Method:  Demographics, disease status, histopathology, treatment and outcome data were collected retrospectively from medical charts and through review of histological slides. Results:  The median age was 36.5 years. All tumours were > 5 cm at presentation and located on the trunk. One patient presented with metastatic disease. There was a mean delay of 3.5 months from presentation to initiation of treatment. Three patients underwent wide excision, with one receiving adjuvant chemotherapy and radiotherapy. At a median follow-up of 20 months from histological diagnosis only one patient was alive in clinical remission. Two patients had succumbed to progressive disease at 8 and 16 months from diagnosis and one patient with terminal metastatic disease was lost to follow-up. Conclusion:  In this series the patients presented with advanced, often unresectable lesions for which single modality therapy was not curative. An adult NF1 health surveillance guideline for resource-constrained environments could lead to early diagnosis and treatment of MPNST and other complications in NF1 patients.

【 授权许可】

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