Numerical simulations of carrier-selective contact silicon solar cells: Role of carrier-selective layers electronic properties
نویسندگان
چکیده
Ag/ITO/MoOx/n-Si/LiFx/Al carrier-selective contact (CSC) solar cell structures are modelled and numerically simulated based on the experimental data using an industrial quality base silicon wafer by Sentaurus TCAD software. The role of (1) electron-selective lithium fluoride (LiFx) layer its thickness, (2) hole-selective molybdenum oxide (MoOx) work function variation, (3) front (MoOx/n-Si) surface passivation interlayer explored device performance. LiFx at rear side is led to substantial enhancement in photocurrent providing electrical barrier minority carriers (holes) a slight improvement open-circuit voltage, but thickness sensitive efficient extraction majority (electrons). MoOx needs be engineered for inducing strong inversion with better built-in potential MoOx/n-Si junction achieve high voltage from cell. A thin SiOx has significantly enhanced device’s minimizing carrier recombination interface.
منابع مشابه
Dopant‐Free and Carrier‐Selective Heterocontacts for Silicon Solar Cells: Recent Advances and Perspectives
By combining the most successful heterojunctions (HJ) with interdigitated back contacts, crystalline silicon (c-Si) solar cells (SCs) have recently demonstrated a record efficiency of 26.6%. However, such SCs still introduce optical/electrical losses and technological issues due to parasitic absorption/Auger recombination inherent to the doped films and the complex process of integrating discre...
متن کاملHole selective MoOx contact for silicon solar cells.
Using an ultrathin (∼ 15 nm in thickness) molybdenum oxide (MoOx, x < 3) layer as a transparent hole selective contact to n-type silicon, we demonstrate a room-temperature processed oxide/silicon solar cell with a power conversion efficiency of 14.3%. While MoOx is commonly considered to be a semiconductor with a band gap of 3.3 eV, from X-ray photoelectron spectroscopy we show that MoOx may be...
متن کاملUnderstanding the Properties of Silicon Solar Cells Aluminium Contact Layers and Its Effect on Mechanical Stability
As the thickness of silicon solar wafer and solar cells becomes thinner, the cells are subjected to high stress due to the thermal coefficient mismatch induced by metallization process. Handling and bowing problems associated with thinner wafers become increasingly important, as these can lead to cells cracking and thus to high yield losses. The goal of this work to provide experimental underst...
متن کاملRole of majority and minority carrier barriers silicon/organic hybrid heterojunction solar cells.
A hybrid approach to solar cells is demonstrated in which a silicon p-n junction, used in conventional silicon-based photovoltaics, is replaced by a room-temperature fabricated silicon/organic heterojunction. The unique advantage of silicon/organic heterojunction is that it exploits the cost advantage of organic semiconductors and the performance advantages of silicon to enable potentially low-...
متن کاملTwo-dimensional Numerical Simulations of High-eeciency Silicon Solar Cells
This paper reports on the rst use of two-dimensional (2D) device simulation for optimising the frontnger spacing of one-sun high-e ciency silicon solar cells of practical dimensions. We examine the 2D current ow patterns in these devices under various illumination conditions, resulting in improved insight into the operating conditions of the cells. Results for the optimal spacing of the front m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Computational Electronics
سال: 2021
ISSN: ['1572-8137', '1569-8025']
DOI: https://doi.org/10.1007/s10825-021-01750-3