Enhanced diffusion of phosphorus at grain boundariesEnhanced diffusion of phosphorus at grain boundaries in cast polycrystalline photovoltaic materials (Wacker, HEM, and Semix) was studied. It was found that the enhancements for the three materials were the same, indicating that the properties of boundaries are similar, even though they were grown by different techniques. In addition, it was observed that grain boundaries capable of enhancing the diffusion always have strong recombination activities. Both phenomena could be related to dangling bonds existing at the boundaries. The present study gives the first evidence that incoherent second order twins of 111/115-plane type are diffusion-active.
Document ID
19840040244
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cheng, L. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shyu, C. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stika, K. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Daud, T. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Crotty, G. T. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)