Solution Synthesized p-Type Copper Gallium Oxide Nanoplates as Hole Transport Layer for Organic Photovoltaic Devices

2015 ◽  
Vol 6 (6) ◽  
pp. 1071-1075 ◽  
Author(s):  
Jian Wang ◽  
Vanessa Ibarra ◽  
Diego Barrera ◽  
Liang Xu ◽  
Yun-Ju Lee ◽  
...  
Keyword(s):  
Gallium Oxide ◽  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Hole Transport Layer ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
P Type

Sub-10 nm copper chromium oxide nanocrystals as a solution processed p-type hole transport layer for organic photovoltaics

2016 ◽  
Vol 4 (16) ◽  
pp. 3607-3613 ◽  
Author(s):  
Jian Wang ◽  
Yun-Ju Lee ◽  
Julia W. P. Hsu
Keyword(s):  
Chromium Oxide ◽  
Organic Photovoltaics ◽  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Hole Transport Layer ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Solution Processed ◽  
P Type

Solution processed <10 nm CuCrO2 nanocrystals are demonstrated as an efficient p-type hole transport layer for organic photovoltaic devices.

Enhanced hole extraction by interaction between CuI and MoO3 in the hole transport layer of organic photovoltaic devices

2016 ◽  
Vol 32 ◽  
pp. 200-207 ◽  
Author(s):  
Sangcheol Yoon ◽  
Hyebin Kim ◽  
Eul-Yong Shin ◽  
In-Gon Bae ◽  
Byoungchoo Park ◽  
...  
Keyword(s):  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Hole Transport Layer ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

Efficiency enhancement of organic photovoltaic devices by embedding uncapped Al nanoparticles in the hole transport layer

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71704-71708 ◽  
Author(s):  
M. Krassas ◽  
G. Kakavelakis ◽  
M. M. Stylianakis ◽  
N. Vaenas ◽  
E. Stratakis ◽  
...  
Keyword(s):  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Hole Transport Layer ◽  
Aluminum Nanoparticles ◽  
Efficiency Enhancement ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Laser Ablation In Liquid ◽  
Al Nanoparticles

The effects of incorporating uncapped aluminum nanoparticles, fabricated by laser ablation in liquid, in the hole transport layer of organic photovoltaic devices were systematically investigated. Resulting in about 9% enhancement in the power conversion efficiency.

scholarly journals Optimized Stoichiometry for CuCrO2 Thin Films as Hole Transparent Layer in PBDD4T-2F:PC70BM Organic Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2109
Author(s):  
Lorenzo Bottiglieri ◽  
Ali Nourdine ◽  
Joao Resende ◽  
Jean-Luc Deschanvres ◽  
Carmen Jiménez
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Atmospheric Conditions ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Solution Composition

The performance and stability in atmospheric conditions of organic photovoltaic devices can be improved by the integration of stable and efficient photoactive materials as substituent of the chemically unstable poly (3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS), generally used as organic hole transport layer. Promising candidates are p-type transparent conductive oxides, which combine good optoelectronic and a higher mechanical and chemical stability than the organic counterpart. In this work, we synthesize Cu-rich CuCrO2 thin films by aerosol-assisted chemical vapour deposition as an efficient alternative to PEDOT:PSS. The effect of stoichiometry on the structural, electrical, and optical properties was analysed to find a good compromise between transparency, resistivity, and energy bands alignment, to maximize the photovoltaic performances., Average transmittance and bandgap are reduced when increasing the Cu content in these out of stoichiometry CuCrO2 films. The lowest electrical resistivity is found for samples synthesized from a solution composition in the 60–70% range. The optimal starting solution composition was found at 65% of Cu cationic ratio corresponding to a singular point in Hackee’s figure of merit of 1 × 10−7 Ω−1. PBDD4T-2F:PC70BM organic solar cells were fabricated by integrating CuCrO2 films grown from a solution composition ranging between 40% to 100% of Cu as hole transport layers. The solar cells integrating a film grown with a Cu solution composition of 65% achieved a power conversion efficiency as high as 3.1%, representing the best trade-off of the optoelectronic properties among the studied candidates. Additionally, despite the efficiencies achieved from CuCrO2-based organic solar cells are still inferior to the PEDOT:PSS counterpart, we demonstrated a significant enhancement of the lifetime in atmospheric conditions of optimal oxides-based organic photovoltaic devices.

Thermal degradation related to the PEDOT:PSS hole transport layer and back electrode of the flexible inverted organic photovoltaic module

2020 ◽  
Vol 4 (4) ◽  
pp. 1974-1983 ◽  
Author(s):  
Hyung Jin Son ◽  
Hong-Kwan Park ◽  
Ji Yeon Moon ◽  
Byeong-Kwon Ju ◽  
Sung Hyun Kim
Keyword(s):  
Thermal Degradation ◽  
Significant Role ◽  
Hole Transport ◽  
Transport Layer ◽  
Organic Photovoltaic ◽  
Hole Transport Layer ◽  
Photovoltaic Module ◽  
The Stability

The hole transport layer (HTL) and back electrode play a significant role in the stability of the flexible organic photovoltaic (OPV) module.

scholarly journals Evaporated MoOx as General Back-Side Hole Collector for Solar Cells

Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 763
Author(s):  
Eugenia Bobeico ◽  
Lucia V. Mercaldo ◽  
Pasquale Morvillo ◽  
Iurie Usatii ◽  
Marco Della Noce ◽  
...  
Keyword(s):  
Solar Cells ◽  
Collection Efficiency ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Efficiency Gain ◽  
Back Side ◽  
Charge Collection Efficiency ◽  
Free Hole ◽  
P Type

Substoichiometric molybdenum oxide (MoOx) has good potential as a hole-collecting layer in solar cells. In this paper, we report on the application of ultrathin evaporated MoOx as a hole collector at the back side of two distinct photovoltaic technologies: polymeric and silicon heterojunction (SHJ). In the case of polymer solar cells, we test MoOx as a hole transport layer in devices with inverted architecture. The higher transparency of the MoOx film, compared to the commonly used poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), allows an enhanced back reflected light into the photoactive layer, thus boosting the photogeneration, as found from the illuminated J-V and external quantum efficiency (EQE) curves. The higher fill factor (FF) of the MoOx-based device also suggests an improved charge collection efficiency compared to the cells with PEDOT:PSS. As for SHJ solar cells, we show that MoOx offers the means for dopant-free hole collection with both p-type and n-type Si wafers. In the present comparison over planar test structures with Ag back reflecting electrodes, we observe an efficiency gain of approximately 1% absolute against a baseline with a conventional p-type amorphous silicon hole collector. The gain is linked to the increased VOC, which is likely due to the reduced recombination at the Si wafer.

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