Opto-electronic properties of a TiO2/PS/mc-Si heterojunction based solar cell
Source abstract
Abstract
Abstract In this work, we show the results of our investigation on the photoelectric properties of heterojunction solar cells based on Au/PS/mc-Si/Al and Au/TiO2/PS/mc-Si/Al structures. Porous silicon (PS) were prepared by an electrochemical etching process with different values of current density. The surface porosity was found to increase with the increase of current density. Pulsed laser deposition was used to deposit 80 nm TiO2 thin films. Surface morphology and structural properties of TiO2/PS were characterized by using scanning electron microscopy (SEM) and atomic force microscopy (AFM). An enhancement of the electrical properties of the TiO2/PS/mc-Si heterojunction was observed after coating with TiO2. As a consequence, the solar cell efficiencies increased from 1.4% for the uncoated PS/mc-Si structure to 5% for the TiO2 coated one. Impedance spectroscopy confirmed the passivation effect of TiO2 through the improvement of the elaborated cells’ electron lifetime and the formation of a TiO2/PS/Au heterojunction with the appearance of a second semi-circle in the Nyquist plot.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Silicon Nanostructures and Photoluminescence · Nanowire Synthesis and Applications · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. For the bright future–bulk heterojunction polymer solar cells with power conversion efficiency of 7.4%10.1002/adma.200903528 ↗
2. Infrared photovoltaics made by solution processing10.1038/nphoton.2009.89 ↗
3. All-solid-state dye-sensitized solar cells with high efficiency10.1038/nature11067 ↗
4. Conversion of sunlight to electric power by nanocrystalline dye-sensitized solar cells10.1016/j.jphotochem.2004.02.023 ↗
5. Efficient hybrid solar cells based on meso-superstructured organometal halide perovskites10.1126/science.1228604 ↗
6. Light trapping in silicon nanowire solar cells10.1021/nl100161z ↗
7. Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays10.1021/nl802886y ↗
8. Nanodome solar cells with efficient light management and self-cleaning10.1021/nl9034237 ↗
9. Porous silicon in solar cells: a review and a description of its application as an AR coating10.1016/0927-0248(94)00193-6 ↗
10. Morphological and optical characteristics of porous silicon produced by anodization process in HF acetonitrile and HF-ethanol solutions10.1590/S0103-50532008000400022 ↗
11. Optoelectronic enhancement of monocrystalline silicon solar cells by porous silicon-assisted mechanical grooving10.1002/pssc.201000250 ↗
12. Electrochemical and optical characterizations of anodic porous n-InP(1 0 0) layers10.1016/j.electacta.2010.09.031 ↗
13. Combination of silicon nitride and porous silicon induced optoelectronic features enhancement of multicrystalline silicon solar cells10.1002/pssc.201000091 ↗
14. The Physics of Macropore Formation in Low Doped n-Type Silicon10.1149/1.2220919 ↗
15. Yerokhov · Renew. Sust. Energy · 1999 · 3 · 29110.1016/S1364-0321(99)00005-2 ↗
16. Macleod · 1986 · 391
17. Structural properties of titanium dioxide films deposited in an rf glow discharge10.1116/1.572220 ↗
18. Pulsed laser deposition of nanostructured tin oxide films for gas sensing applications10.1016/S0925-4005(01)00758-4 ↗
19. Structure and photoluminescence of ultrathin films of SnO2 nanoparticles synthesized by means of pulsed laser deposition10.1063/1.3485811 ↗
20. TiO2/porous silicon nanocomposite passivation coating for mc-Si wafers10.1007/s10854-014-2579-6 ↗
21. Tauc · Phys. Status Solidi · 1966 · 15 · 62710.1002/pssb.19660150224 ↗
22. Yacobi · 2002
23. Investigation of structural, optical and photocatalytic properties of mesoporous TiO2 thin film synthesized by sol–gel templating technique10.1016/j.physe.2009.10.006 ↗
24. The influence of Cu2O crystal structure on the Cu2O/ZnO heterojunction photovoltaic performance10.1016/j.spmi.2015.07.010 ↗
25. Enhancement of Efficiency of a Solar Cell Fabricated on Black Si Made by Inductively Coupled Plasma-Reactive Ion Etching Process: A Case Study of a n-CdS/p-Si Heterojunction Cell10.1021/acsami.5b04978 ↗
26. Reduction of Cu-rich interfacial layer and improvement of bulk CuO property through two-step sputtering for p-CuO/n-Si heterojunction solar cell10.1063/1.4893321 ↗
27. Influence of etching parameters on optoelectronic properties of c-Si/porous silicon heterojunction – application to solar cells10.1051/epjap/2013120152 ↗
28. Studies on fabrication and characterization of a ZnO/p-Si-based solar cell10.1016/j.spmi.2010.08.007 ↗
29. Devlopement and caracterization of nanoporous p-silicon structures for photovoltaic applications
30. Influence of porous silicon passivation layer and TiO2 coating on the optoelectronic properties of multicrystalline Si substrate
31. The effect of porosity on the properties of silicon solar cell10.1108/13565361011034812 ↗
32. Simultaneous determination of carrier lifetime and electron density-of-states in P3HT: PCBM organic solar cells under illumination by impedance spectroscopy10.1016/j.solmat.2009.10.015 ↗
33. Hierarchical construction of self-standing anodized titania nanotube arrays and nanoparticles for efficient and cost-effective front-illuminated dye-sensitized solar cells10.1021/nn201169u ↗