Low‐Temperature Photoluminescence Investigation of Light‐Induced Degradation in Boron‐Doped CZ Silicon

Lowtemperature epitaxial growth and photoluminescence characterization of GaN

Progress in Understanding and Reducing the Light Degradation of Cz Silicon Solar Cells

Solar cells made on boron-doped Czochralski (Cz) silicon show a degradation in performance when exposed to light until a stable efficiency is reached. This effect is due to the creation of metastable defects in the Cz silicon base which strongly reduce the bulk carrier lifetime. In a recent model, proposed by one of the authors, the metastable defect was tentatively identified with a boron-oxyg...

Light-induced Degradation in Cz Silicon Solar Cells: Fundamental Understanding and Strategies for Its Avoidance

Solar cells manufactured on boron-doped Czochralski-grown silicon (Cz-Si) degrade in performance when exposed to light or minority carriers are injected in the dark until a stable efficiency is reached. This effect, which is now known for almost 30 years, is due to the activation of a specific metastable defect in the Cz-Si material. Although a conclusive explanation of the effect is still to b...

Modeling and Simulation of Oxygen Precipitation in CZ Silicon

This paper describes modeling and simulation for the growth and dissolution of oxygen precipitates in Czochralski silicon(CZ) wafers during heat treatment. Growth and dissolution rates arc newly derived and inserted into a set of chemical rate equations(CILEs) and a Fokkor-Planck equation(FPE). Annealing ambients and surface conditions are taken into account for solving continuity equations in ...

investigation of (meta)discourse markers in elt coursebooks

the present study aimed to investigate representation of discourse markers and metadiscourse markers in conversations and readings of general elt coursebook series used in the language centers of iran. to this aim, four elt coursebooks popularly taught in language centers of this country were analyzed based on fung and carter’s (2007) framework regarding discourse markers and hyland’s (2005) fr...