Study of semiconductor heterojunctions of ZnSe, GaAs and Ge, 1 May - 31 July 1970

Fabrication problems and device characteristics of ZnSe-GaAs and Ge-GaAs heterojunction

Study of semiconductor heterojunctions of zinc selenide, gallium arsenide, and germanium

Fabrication and properties of gallium arsenide and zinc selenide junctions with germanium, and of gallium arsenide-zinc selenide heterojunction

Studies of heteroface solar cell performance

The development, fabrication, and failure modes of AlxGa(1-x)As-GaAs heteroface solar cells are described. Crystal growth, the diffusion of Zn into the GaAs layer to form the p-n junction, SEM studies of the diffusion length of GaAs, and procedures for making ohmic contacts are discussed

Study of semiconductor heterojunctions of ZnSe, GaAs and Ge Semiannual progress report, period ending 30 Sep. 1968

Gain, frequency and temperature dependence in heterojunction transistors of GaAs, ZnSe, and G

Study of semiconductor heterojunctions of ZnSe, GaAs and Ge

Experimentals characteristics of semiconductor heterojunction pairs ZnS/GaP and ZnSe/Ga

Study of semiconductor heterojunctions of ZnSe, GaAs and Ge Quarterly report, 1 Aug. - 31 Oct. 1969

Semiconductor heterojunctions of zinc selenides, gallium arsenides, and germaniu

The TORCH PMT: a close packing, multi-anode, long life MCP-PMT for Cherenkov applications

Photek (U.K.) and the TORCH collaboration are undertaking a three year development program to produce a novel square MCP-PMT for single photon detection. The TORCH detector aims to provide particle identification in the 2–10 GeV/c momentum range, using a Time-of-Flight method based on Cherenkov light. It is a stand-alone R&D project with possible application in LHCb, and has been proposed for the LHCb Upgrade. The Microchannel Plate (MCP) detector will provide a single photon timing accuracy of 40 ps, and its development will include the following properties: (i) Long lifetime up to at least 5 C/cm2; (ii) Multi-anode output with a spatial resolution of 6 mm and 0.4 mm respectively in the horizontal and vertical directions, incorporating a novel charge-sharing technique; (iii) Close packing on two opposing sides with an active area fill factor of 88% in the horizontal direction. Results from simulations modelling the MCP detector performance factoring in the pulse height variation from the detector, NINO threshold levels and potential charge sharing techniques that enhance the position resolution beyond the physical pitch of the pixel layout will be discussed. Also, a novel method of coupling the MCP-PMT output pads using Anisotropic Conductive Film (ACF) will be described. This minimises parasitic input capacitance by allowing very close proximity between the frontend electronics and the MCP detector

Holistic Experiences and Strategies for Conducting Research With Couples.

In this article we outline methodological considerations for conducting research interviews with couples. We draw from two qualitative men’s health studies, both developed to explore social interactions between men and their partners of either sex in relation to their health practices. We utilized a combination of separate interviews and joint couple interviews. From these studies we offer insight into our experiences of using both types of interview styles, addressing four key areas which span elements across the research project journey: (a) choosing a mode of interview; (b) ethical concerns in couple research; (c) the interview as a platform for disclosure; and (d) analyzing data from couple research

Bias-Dependent Generation and Quenching of Defects in Pentacene

We describe a defect in pentacene single crystals that is created by bias stress and persists at room temperature for an hour in the dark but only seconds with 420nm illumination. The defect gives rise to a hole trap at Ev + 0.38eV and causes metastable transport effects at room temperature. Creation and decay rates of the hole trap have a 0.67eV activation energy with a small (108 s-1) prefactor, suggesting that atomic motion plays a key role in the generation and quenching process.Comment: 10 pages, 3 figure