Improved Diffused-region Recombination-current Pre-factor Analysis

An improved photometric stereo through distance estimation and light vector optimization from diffused maxima region

Although photometric stereo offers an attractive technique for acquiring 3D data using low-cost equipment, inherent limitations in the methodology have served to limit its practical application, particularly in measurement or metrology tasks. Here we address this issue. Traditional Photometric Stereo assumes that lighting directions at every pixel are the same, which is not usually the case in ...

Limitation of industrial phosphorus-diffused emitters by SRH recombination

It is commonly assumed in the PV community that Auger recombination is the dominant loss mechanism in heavily phosphorusdoped emitters of industrial Si solar cells. Contrary to this assumption, we show in this work that most of the losses are caused by Shockley-Read-Hall (SRH) recombination via defect states introduced by inactive phosphorus. Using numerical device simulations, we successfully ...

Improved quantification of salivary gland scintigraphy by means of factor analysis

Introduction: In this study the automatic separation of oral and salivary gland activity and spontaneous secretion by means of factor analysis for quantitative salivary gland scintigraphy is introduced. Methods: After intravenous administration of 99mTc sodium pertechnetate, dynamic scintigraphy was performed. 20 minutes after tracer application 2 ml of lemon juice was delivered to stimulate t...

Detection of metallic prospects using staged factor and fractal analysis in Zouzan region, NE Iran

The Zouzan area is located in the SE of Torbat-e- Heydarieh city (NE Iran). This area is located on north part of the Lut block which consists of basaltic andesite, tuff and porphyritic andesite. The purpose of this research is to investigate the enrichment of metal elements in the Zouzan area and provide a metallic geochemical model. For this purpose, 488 stream samples were analyzed using by ...

Effect of gettered iron on recombination in diffused regions of crystalline silicon wafers