scholarly journals Thin film iron pyrite deposited by hybrid sputtering/co-evaporation as a hole transport layer for sputtered CdS/CdTe solar cells

2017 ◽  
Vol 163 ◽  
pp. 277-284 ◽  
Author(s):  
Khagendra P. Bhandari ◽  
Xinxuan Tan ◽  
Peymon Zereshki ◽  
Fadhil K. Alfadhili ◽  
Adam B. Phillips ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Iron Pyrite ◽  
Cdte Solar Cells

CZTS nanoparticles as an effective hole-transport layer for Sb2Se3 thin-film solar cells

Solar Energy ◽  
2021 ◽  
Vol 226 ◽  
pp. 154-160
Author(s):  
Fangling Mu ◽  
Zhen Liu ◽  
Wei Zi ◽  
Yang Cao ◽  
Xiaoman Lu ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Thin Film Solar Cells ◽  
Hole Transport Layer ◽  
Czts Nanoparticles

scholarly journals Very high V OC and FF of CdTe thin‐film solar cells with the applications of organo‐metallic halide perovskite thin film as a hole transport layer

2020 ◽  
Vol 28 (10) ◽  
pp. 1024-1033
Author(s):  
Khagendra P. Bhandari ◽  
Fadhil K. Alfadhili ◽  
Ebin Bastola ◽  
Suneth C. Watthage ◽  
Zhaoning Song ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Thin Film Solar Cells ◽  
Hole Transport Layer ◽  
Cdte Thin Film ◽  
Halide Perovskite ◽  
Very High

Solution-processed Nanocrystal Based Thin Films as Hole Transport Materials in Cadmium Telluride Photovoltaics

MRS Advances ◽  
2018 ◽  
Vol 3 (41) ◽  
pp. 2441-2447 ◽  
Author(s):  
Ebin Bastola ◽  
Kamala Khanal Subedi ◽  
Khagendra P. Bhandari ◽  
Randy J. Ellingson
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Cadmium Telluride ◽  
Valence Band ◽  
Hole Transport ◽  
Transport Layer ◽  
Back Contact ◽  
Iron Pyrite ◽  
Solution Processed ◽  
Cdte Solar Cells

ABSTRACTThe cadmium telluride (CdTe) photovoltaic (PV) comprise an efficient and cost-effective technology for harvesting solar energy. However, device efficiency remains limited in part by low-open circuit voltage (VOC) and fill factor (FF) due to inefficient transport of photo-generated charge carriers. Given the deep valence band of CdTe, the use of copper/gold (Cu/Au) as a back contact serves primarily to narrow the width of the inherent Schottky junction evident in CdTe solar cells (in our laboratory, Cu/Au has been used as a standard back contact). For efficient transport of carriers to and into the back contact, a hole transport layer (HTL) is desired with valence band edge comparable to that of CdTe (∼ -5.9 eV). Here, we report solution-processed nanocrystal (NCs) based thin films as HTLs in CdTe solar cells. The earth abundant materials we discuss include iron pyrite (FeS2), nickel-alloyed iron pyrite (NixFe1-xS2), zinc copper sulfide (ZnxCu1-xS) nanocomposites, and perovskite-based films. The FeS2 and NixFe1-xS2 NCs are synthesized by a hot-injection route, and thin films are fabricated by drop-casting, and spin-coating techniques using colloidal NCs. ZnxCu1-xS thin films are fabricated by chemical bath deposition. These NC-based thin films are applied and studied as the HTLs in CdTe devices. On using these materials, the device performance can be increased up to 10% compared to the standard Cu/Au back contact. Here, we discuss the benefits, challenges, and opportunities for these back contact materials in CdTe photovoltaics.

scholarly journals Investigation of Inverted Perovskite Solar Cells for Viscosity of PEDOT:PSS Solution

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 358 ◽  
Author(s):  
Pao-Hsun Huang ◽  
Yeong-Her Wang ◽  
Chien-Wu Huang ◽  
Wen-Ray Chen ◽  
Chien-Jung Huang
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Carrier Transport ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Considerable Impact ◽  
Stable Performance

In this paper, we demonstrate that the inverted CH3NH3PbI3 (perovskite) solar cells (PSCs) based on fullerene (C60) as an acceptor is fabricated by applying an improved poly(3,4-ethlyenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) solution as a hole transport layer (HTL). The power conversion efficiency (PCE) of inverted PSCs is increased by 37.5% with stable values of open-circuit voltage (VOC) and fill factor (FF) because we enhance the viscosity of the PEDOT:PSS solution, indicating the perfect effect on both external quantum efficiency (EQE) and surface grain size. The characteristics of the PEDOT:PSS solution, which is being improved through facile methods of obtaining excellent growth of PEDOT:PSS thin film, have a considerable impact on carrier transport. A series of further processing fabrications, including reliable and feasible heating and stirring techniques before the formation of the PEDOT:PSS thin film via spin-coating, not only evaporate the excess moisture but also obviously increase the conductivity. The raised collection of holes become the reason for the enhanced PCE of 3.0%—therefore, the stable performance of FF and VOC are attributed to lower series resistance of devices and the high-quality film crystallization of perovskite and organic acceptors, respectively.

In-situ synthesis of organic-inorganic hybrid thin film of PEDOT/V2O5 as hole transport layer for polymer solar cells

Solar Energy ◽  
2019 ◽  
Vol 190 ◽  
pp. 63-68
Author(s):  
Hanbing Ling ◽  
Rui Zhang ◽  
Xiaoqin Ye ◽  
Zhiyue Wen ◽  
Jiangbin Xia ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Polymer Solar Cells ◽  
In Situ Synthesis ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Hybrid Thin Film ◽  
Inorganic Hybrid

Copper iodide nanoparticles as a hole transport layer to CdTe photovoltaics: 5.5 % efficient back-illuminated bifacial CdTe solar cells

2022 ◽  
Vol 235 ◽  
pp. 111451
Author(s):  
Dipendra Pokhrel ◽  
Ebin Bastola ◽  
Kamala Khanal Subedi ◽  
Suman Rijal ◽  
Manoj K. Jamarkattel ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Copper Iodide ◽  
Cdte Solar Cells ◽  
Back Illuminated

scholarly journals Combustion Processed Nickel Oxide and Zinc Doped Nickel Oxide Thin Films as a Hole Transport Layer for Perovskite Solar Cells

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 627
Author(s):  
Ponmudi Selvan Thiruchelvan ◽  
Chien-Chih Lai ◽  
Chih-Hung Tsai
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Nickel Oxide ◽  
Perovskite Solar Cells ◽  
Combustion Process ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
X Ray

Combustion processed nickel oxide (NiOx) thin film is considered as an alternative to the sol-gel processed hole transport layer for perovskite solar cells (PSCs). In this paper, NiOx thin film was prepared by the solution–combustion process at 250 °C, a temperature lower than the actual reaction temperature. Furthermore, the properties of the NiOx hole transport layer (HTL) in PSCs were enhanced by the incorporation of zinc (Zn) in NiOx thin films. X-ray diffraction and X-ray photoelectron spectroscopy results revealed that the formation of NiOx was achieved at lower annealing temperature, which confirms the process of the combustion reaction. The electrical conductivity was greatly improved with Zn doping into the NiOx crystal lattice. Better photoluminescence (PL) quenching, and low PL lifetime decay were responsible for better charge separation in 5% Zn doped NiOx, which results in improved device performance of PSCs. The maximum power conversion efficiency of inverted PSCs made with pristine NiOx and 5% Zn-NiOx as the HTL was 13.62% and 14.87%, respectively. Both the devices exhibited better stability than the PEDOT:PSS (control) device in an ambient condition.

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