Efficiency Improved byH2Forming Gas Treatment for Si-Based Solar Cell Applications

Abstract

The photovoltaic (PV) effects have been investigated and improved using efficient treatments both on single-crystalline (sc) and on multicrystalline (mc) silicon (Si) solar cells. The major effect of forming gas (FG) treatment on solar cell performance is the fill-factor values, which increase 3.75% and 8.28%, respectively, on sc-Si and mc-Si solar cells. As for the optimal 15%-H2ratio and 40-minute FG treatment, the conversion efficiency (η) values drastically increase to 14.89% and 14.31%, respectively, for sc- and mc-Si solar cells. Moreover, we can measure the internal quantum efficiency (IQE) values increase withH2-FG treatment under visible wavelength (400~900 nm) radiation. Thus based on the work in this research, we confirm thatH2passivation has become crucial both in PV as well as in microelectronics fields. Moreover, the developed mc-Si solar cell by properH2FG treatment is quite suitable for commercial applications.

Performance of High Efficiency Avalanche Poly-SiGe Devices for Photo-Sensing Applications

“…As a result, it can effectively increase the surface mobility of the grown precursor, allowing free radicals to find a more stable position, and promote crystallization. Additionally, the passivation effect of H 2 can also be used for improving the grain boundary of the better efficiency in the device applications [ 26 , 27 ].…”

Influence of IR laser doping method on surface emitter with phosphosilicate glass for solar cells

“…Multicrystalline silicon (mc-Si) wafers are widely used in mass production of solar cells due to their lower cost, compared with monocrystalline silicon wafers [1,2]. Mono-Si growth is 5 times more energy consuming than mc-Si [3].…”

Improvement in the light conversion efficiency of silicon solar cells by pure hydrogen annealing

“…There have been several reports on the enhanced conversion efficiency of low-cost solar cells after annealing in forming gas at elevated temperature [5][6][7][8][9][10]. Improvements in solar cell efficiency after FGA on silicon nitride-coated surfaces have been readily demonstrated by Kishore et al [10] and Hanoka et al [11].…”