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Dust or soot from the air causes significant losses in the PV modules. Evaluating the performance loss of photovoltaic modules in a location involves collecting data from a fielded PV system. This is usually a time consuming and a costly affair. Hence we propose collection of dust from an area, preferably from the module surface, and use it as dust sample so that the soiling experiments can be conducted...
Hole and electron collectors in silicon heterojunction solar cells consist of hydrogenated amorphous silicon layer stacks deposited on the crystalline silicon wafer surfaces. Charge carrier extraction from these layers is achieved by electrodes consisting of a transparent conductive oxide and a metal layer. Earlier, the mere presence of the transparent conductive oxide layer on top of the hole collecting...
We report here an electroless metal (Ag) - assisted chemical etching (MacEtch) process as light management surface-texturing technique for ultra-thin single crystalline Si thin film photovoltaics. Monolayer Ag nanostructures were formed on the top of the Si surface based on thin film evaporation and annealing process. Large area thin film black Si sample was obtained with simple wet etching process,...
For the current transport mechanism between the n+ Si emitter and the screen printed silver contact, there is strong experimental evidence that the largest current contribution flows through Ag crystallites directly connected with the silver finger, which are preferably concentrated in some tips of the Si pyramid surface. For this purpose, we focused on the origin of these Ag crystallites and we analyzed...
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