Band offset of vanadium-doped molybdenum oxide hole transport layer in organic photovoltaics

2016 ◽  
Vol 122 ◽  
pp. 18-22 ◽  
Author(s):  
Feng-Kuei Chang ◽  
Yi-Chi Huang ◽  
Jiann-Shing Jeng ◽  
Jen-Sue Chen
Keyword(s):  
Molybdenum Oxide ◽  
Organic Photovoltaics ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Band Offset

Chalcogenide As Inorganic Transport Layer in Perovskite Solar Cell

2021 ◽  
Author(s):  
Atul kumar
Keyword(s):  
Solar Cell ◽  
Fill Factor ◽  
Perovskite Solar Cell ◽  
Hole Transport ◽  
Band Alignment ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Band Offset ◽  
Primary Concern ◽  
Earth Abundant

Abstract Fill factor (FF) deficit and stability is a primary concern with the perovskite solar cell. Resistance values and band alignment at junction interface in perovskite are causing low fill factor. Moisture sensitivity of methylammonium lead halide perovskite is causing a stability issue. We tried to solve these issues by using inorganic hole transport layer (HTL). FF is sensitive to the band offset values. We study the band alignment/band offset effect at the Perovskite /HTL junction. Inorganic material replacing Spiro-MeOTAD can enhance the stability of the device by providing an insulation from ambient. Our simulation study shows that the earth abundant p-type chalcogenide materials of SnS as HTL in perovskite is comparable to Spiro-MeOTAD efficiency.

scholarly journals Energy Level Engineering of Charge Selective Contact and Halide Perovskite by Modulating Band Offset: Mechanistic Insights

2020 ◽  
Author(s):  
Yassine Raoui ◽  
Hamid Ez-Zahraouy ◽  
Samrana Kazim ◽  
Shahzada Ahmad
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conduction Band ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Conduction Band Minimum ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Band Offset ◽  
Interfacial Recombination

<p>Mixed cation and anion based perovskites solar cells (FAPbI<sub>3</sub>)<sub>0.85</sub>(MAPbBr<sub>3</sub>)<sub>0.15</sub> gave enhanced stability under outdoor conditions, however, it yielded limited power conversion efficiency when SnO<sub>2</sub> and Spiro-OMeTAD were employed as electron and hole transport layer (ETL/HTL). The inevitable interfacial recombination of charge carriers at ETL/perovskite and perovskite/HTL interface diminished the efficiency in planar (n-i-p) perovskite solar cells. Employing computational approach for uni-dimensional device simulator, the effect of band offset on charge recombination at both interfaces were investigated. We noted that it acquired cliff structure when the conduction band minimum of the ETL is lower than that of the perovskite, and thus maximizes interfacial recombination. However, if the conduction band minimum of ETL is higher than perovskite, i.e. spike structure is formed, which improve the performance of solar cell up to an optimum value of conduction band offset allowing to reach performance of 25.21%, with an open circuit voltage (<i>V</i><sub>oc</sub>) of 1231 mV, a current density <i>J</i><sub>sc</sub> of 24.57 mA/cm<sup>2</sup> and a fill factor of 83.28%. Additionally, we found that beyond the optimum offset value, large spike structure could decrease the performance. With an optimized, energy level of Spiro-OMeTAD and the thickness of mixed-perovskite layer performance of 26.56 % can be attained. Our results demonstrate a detailed understanding about the energy level tuning between the charge selective layers and perovskite and furthermore how the improvement in PV performance can be achieved by adjusting the energy level offset.</p>

Electrochemically crosslinked surface-grafted PVK polymer brushes as a hole transport layer for organic photovoltaics

2011 ◽  
Vol 21 (28) ◽  
pp. 10261 ◽  
Author(s):  
Maria Celeste Tria ◽  
Kang-Shyang Liao ◽  
Nigel Alley ◽  
Seamus Curran ◽  
Rigoberto Advincula
Keyword(s):  
Organic Photovoltaics ◽  
Polymer Brushes ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

scholarly journals Enhanced efficiency and high temperature stability of hybrid quantum dot light-emitting diodes using molybdenum oxide doped hole transport layer

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 16252-16257 ◽  
Author(s):  
Jinyoung Yun ◽  
Jaeyun Kim ◽  
Byung Jun Jung ◽  
Gyutae Kim ◽  
Jeonghun Kwak
Keyword(s):  
High Temperature ◽  
Quantum Dot ◽  
Molybdenum Oxide ◽  
Temperature Stability ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Stable Operation ◽  
High Temperature Stability ◽  
Light Emitting

QLEDs introducing a p-doped HTL exhibit stable operation at high temperature up to 400 K.

Dehydration of molybdenum oxide hole extraction layers via microwave annealing for the improvement of efficiency and lifetime in organic solar cells

2016 ◽  
Vol 4 (32) ◽  
pp. 7683-7694 ◽  
Author(s):  
Anastasia Soultati ◽  
Ioannis Kostis ◽  
Panagiotis Argitis ◽  
Dimitra Dimotikali ◽  
Stella Kennou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molybdenum Oxide ◽  
Organic Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Microwave Annealing ◽  
Post Annealing

Microwave post-annealing induces effective dehydration in the MoOx hole transport layer and enhances the efficiency and lifetime of organic solar cells.

Influence of the hole-transport layer on the initial behavior and lifetime of inverted organic photovoltaics

2011 ◽  
Vol 95 (5) ◽  
pp. 1382-1388 ◽  
Author(s):  
Matthew T. Lloyd ◽  
Craig H. Peters ◽  
Andres Garcia ◽  
Isaac V. Kauvar ◽  
Joseph J. Berry ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

Spin coated carbon nanotubes as the hole transport layer in organic photovoltaics

2012 ◽  
Vol 96 ◽  
pp. 298-301 ◽  
Author(s):  
Emmanuel Kymakis ◽  
Minas M. Stylianakis ◽  
George D. Spyropoulos ◽  
Emmanuel Stratakis ◽  
Emmanuel Koudoumas ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Organic Photovoltaics ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Coated Carbon
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