Effect of single-layer Ta2O5 and double-layer SiO2/Ta2O5 anti-reflective coatings on GaInP/GaAs/Ge triple-junction solar cell performance

Double layer distribution can be observed in Cu2SnZnSe4 (CZTSe) thin films prepared via the selenization of metallic precursors. The double layer structure may cause the back contact of Mo substrates...

Download Full-text

Correlation of Hydrogen Dilution Profiling to Material Structure and Device Performance of Hydrogenated Nanocrystalline Silicon Solar Cells

MRS Proceedings ◽

10.1557/proc-1066-a03-03 ◽

2008 ◽

Vol 1066 ◽

Cited By ~ 21

Author(s):

Baojie Yan ◽

Guozhen Yue ◽

Yanfa Yan ◽

Chun-Sheng Jiang ◽

Charles W. Teplin ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Cell Structure ◽

Nanocrystalline Silicon ◽

Cell Performance ◽

Solar Cell Performance ◽

Seeding Layer ◽

Single Junction ◽

Junction Solar Cell ◽

Hydrogen Dilution

ABSTRACTWe present a systematic study on the correlation of hydrogen dilution profiles to structural properties materials and solar cell performance in nc-Si:H solar cells. We deposited nc-Si:H single-junction solar cells using a modified very high frequency (VHF) glow discharge technique on stainless steel substrates with various profiles of hydrogen dilution in the gas mixture during deposition. The material properties were characterized using Raman spectroscopy, X-TEM, AFM, and C-AFM. The solar cell performance correlates well with the material structures. Three major conclusions are made based on the characterization results. First, the optimized nc-Si:H material does not show an incubation layer, indicating that the seeding layer is well optimized and works as per design. Second, the nanocrystalline evolution is well controlled by hydrogen dilution profiling in which the hydrogen dilution ratio is dynamically reduced during the intrinsic layer deposition. Third, the best nc-Si:H single-junction solar cell was made using a proper hydrogen dilution profile, which caused a nanocrystalline distribution close to uniform throughout the thickness, but with a slightly inverse nanocrystalline evolution. We have used the optimized hydrogen dilution profiling and improved the nc-Si:H solar cell performance significantly. As a result, we have achieved an initial active-area cell efficiency of 9.2% with a nc-Si:H single-junction structure, and 15.4% with an a-Si:H/a-SiGe:H/nc-Si:H triple-junction solar cell structure.

Download Full-text

Positioning and doping effects on quantum dot multi-junction solar cell performance

Progress in Photovoltaics Research and Applications ◽

10.1002/pip.2487 ◽

2014 ◽

Vol 23 (6) ◽

pp. 793-799 ◽

Cited By ~ 7

Author(s):

Alexandre W. Walker ◽

Olivier Thériault ◽

Karin Hinzer

Keyword(s):

Solar Cell ◽

Quantum Dot ◽

Cell Performance ◽

Solar Cell Performance ◽

Junction Solar Cell ◽

Doping Effects

Download Full-text

Optimization of multi-junction solar cell performance at infrared light by application of thin film Si:Ge solar cell

2010 35th IEEE Photovoltaic Specialists Conference ◽

10.1109/pvsc.2010.5614057 ◽

2010 ◽

Cited By ~ 1

Author(s):

Yi Wang ◽

Anthony Lochtefeld ◽

Ji-Soo Park ◽

Christopher Kerestes ◽

Robert Opila ◽

...

Keyword(s):

Thin Film ◽

Solar Cell ◽

Cell Performance ◽

Infrared Light ◽

Solar Cell Performance ◽

Junction Solar Cell

Download Full-text

Temperature Characteristics of Concentrator Photovoltaics Analyzed by Circuit Calculation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.894.234 ◽

2014 ◽

Vol 894 ◽

pp. 234-237

Author(s):

Kensuke Nishioka ◽

Kosei Sato ◽

Yasuyuki Ota

Keyword(s):

Solar Cell ◽

Triple Junction ◽

Equivalent Circuit Model ◽

Temperature Characteristic ◽

Characteristic Analysis ◽

Solar Cell Performance ◽

Circuit Simulator ◽

Junction Solar Cell ◽

Saturation Current Density ◽

Calculation Results

Temperature characteristic analysis of the triple-junction solar cell was carried out using circuit simulator under concentration conditions. The temperature exponent of saturation current density for each single-junction solar cell was derived. Extracted temperature exponents were used in the equivalent circuit model for the triple-junction solar cell, and the calculations of solar cell performance were carried out at various temperatures and concentration ratios. The calculation results agreed well with the measured results.

Download Full-text