Graphene-Based Contacts for Optoelectronic Devices.

Hybrid transparent contacts based on combinations of a transparent conductive oxide and a few graphene monolayers were developed in order to evaluate their optical and electrical performance with the main aim to use them as front contacts in optoelectronic devices. The assessment of the most suitable strategies for their fabrication was performed by testing different protocols addressing such issues as the protection of the device structure underneath, the limitation of sample temperature during the graphene-monolayer transfer process and the determination of the most suitable stacking structure. Suitable metal ohmic electrodes were also evaluated.

Advanced Graphene-Based Transparent Conductive Electrodes for Photovoltaic Applications.

New architectures of transparent conductive electrodes (TCEs) incorporating graphene monolayers in different configurations have been explored with the aim to improve the performance of silicon-heterojunction (SHJ) cell front transparent contacts. In SHJ technology, front electrodes play an important additional role as anti-reflectance (AR) coatings. In this work, different transparent-conductive-oxide (TCO) thin films have been combined with graphene monolayers in different configurations, yielding advanced transparent electrodes specifically designed to minimize surface reflection over a wide range of wavelengths and angles of incidence and to improve electrical performance.

Prospective validation of the Martinez-Gimeno clinicopathologic scoring system (MGSS) for evaluating risk of cervical lymph node metastases of squamous cell carcinoma of the oral cavity.

Background: The prediction of neck metastasis from oral squamous cell carcinoma is an unresolved issue. The Martinez-Gimeno Scoring System (MGSS) is an index designed as a predictive aid that may be implemented after analysis of the tumor resection.

Methods: A double-blind cohort study was designed and carried out in a tertiary hospital.