NaCl doped electrochemical PEDOT:PSS layers for inverted perovskite solar cells with enhanced stability

Erazo, Eider A.; Castillo-Bendeck, Daniel; Ortiz, Pablo; Cortés, María Teresa González

doi:10.1016/j.synthmet.2019.116178

Cited by 10 publications

(10 citation statements)

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“…The above meant that, for the PEDOT:PSS-Cl reference device, an average of 70% of its initial efficiency was maintained, compared to 77% for the PEDOT-Al devices. This also represents an advantage of PEDOT electrodeposition, since spin-coated PEDOT:PSS devices tend to degrade completely in about 20 days of storage [ 20 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

“…The electrodeposition of the HTM was performed as in our previous report [ 20 ]; the patterned ITO glass substrates were scrubbed with a soft brush and a cloth using an aqueous solution of neutral detergent. The substrates were then sequentially subjected to ultrasonic cleaning, once in the detergent solution, and twice in deionized water for 15 min each time.…”

Section: Methodsmentioning

confidence: 99%

“…In this work, we present similar improvements to those achieved by ALD in inverted PEDOT:PSS devices, but using an electrodeposited PEDOT:PSS/Al 2 O 3 HTM bilayer. In our previous work, the electropolymerized PEDOT:PSS-Cl was presented as an alternative to the solution-processed PEDOT:PSS HTM in perovskite solar cells [ 20 ]. From there, other papers have electrodeposited PEDOT using dopants different to the PSS, and to date a 13.56% PCE has been demonstrated by optimizing the monomer concentration and the electric charge used in the electropolymerization [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposited PEDOT:PSS-Al2O3 Improves the Steady-State Efficiency of Inverted Perovskite Solar Cells

et al. 2021

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The atomic layer deposition (ALD) of Al2O3 between perovskite and the hole transporting material (HTM) PEDOT:PSS has previously been shown to improve the efficiency of perovskite solar cells. However, the costs associated with this technique make it unaffordable. In this work, the deposition of an organic–inorganic PEDOT:PSS-Cl-Al2O3 bilayer is performed by a simple electrochemical technique with a final annealing step, and the performance of this material as HTM in inverted perovskite solar cells is studied. It was found that this material (PEDOT:PSS-Al2O3) improves the solar cell performance by the same mechanisms as Al2O3 obtained by ALD: formation of an additional energy barrier, perovskite passivation, and increase in the open-circuit voltage (Voc) due to suppressed recombination. As a result, the incorporation of the electrochemical Al2O3 increased the cell efficiency from 12.1% to 14.3%. Remarkably, this material led to higher steady-state power conversion efficiency, improving a recurring problem in solar cells.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrodeposited PEDOT:PSS-Al2O3 Improves the Steady-State Efficiency of Inverted Perovskite Solar Cells

et al. 2021

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“…Generally, modification methods can be classified into three types: doping [61,[78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94], post-treatment [62,[95][96][97] and using bilayer [98][99][100][101][102]. Furthermore, there are some other methods reported to modify the properties of PEDOT:PSS for improving the device stability, such as, using other dopants to replace PSS [56,103], and developing new processing methods of PEDOT:PSS film [104,105], which are discussed in Section 3.…”

Section: Methods To Improve the Pscs Stability By Tailoring Pedot:pss Htlmentioning

confidence: 99%

“…Copyright 2017 Elsevier.Some groups focus on new fabricating methods of PEDOT:PSS film to improve its physical and electrical properties. Erazo et al deposited PEDOT:PSS layers by an alternative electrochemical (EC) route that offers precise synthesis control, scale-up potential and enhanced cell stability[104]. The EC-PEDOT:PSS significantly improved the stability of the cells, allowing the devices to maintain 90% of their average efficiency after 15 days.…”

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Review on Tailoring PEDOT:PSS Layer for Improved Device Stability of Perovskite Solar Cells

2021

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Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has high optical transparency in the visible light range and low-temperature processing condition, making it one of the most widely used polymer hole transport materials inverted perovskite solar cells (PSCs), because of its high optical transparency in the visible light range and low-temperature processing condition. However, the stability of PSCs based on pristine PEDOT:PSS is far from satisfactory, which is ascribed to the acidic and hygroscopic nature of PEDOT:PSS, and property differences between PEDOT:PSS and perovskite materials, such as conductivity, work function and surface morphology. This review summaries recent efficient strategies to improve the stability of PEDOT:PSS in PSCs and discusses the underlying mechanisms. This review is expected to provide helpful insights for further increasing the stability of PSCs based on commercial PEDOT:PSS.

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Configuration of Methylammonium Lead Iodide Perovskite Solar Cell and its Effect on the Device's Performance: A Review

Dahal

2022

Adv Materials Inter

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Since it is a source of clean energy, harnessing solar power is a natural solution to resolving the prevalent energy crisis. A solar cell is the most effective device to convert solar energy into electricity. Hence, a study on solar cells is the utmost area of interest in the energy sector.As illustrated in Figure 1, there are three generations of solar cells. Among these, the first-generation cells were of p-n homojunction on a silicon crystal, where the thickness of the absorbing layer was more than 180 µm. Mainly, silicon (Si) and germanium (Ge), indirect bandgap materials, assemble the cell. Single crystal silicon solar cells exhibit a conversion efficiency of about 26.7% and dominate the current solar cell market. [2] The second-generation solar cells are heterojunction solar cells using direct bandgap thin film materials (CdS, CIGS, etc.). The demerits of the first and second-generation solar cells are the cost of semiconducting materials, limited availability, and toxicity to human health. Emerging thirdgeneration solar cells act as an alternative. These include dyesensitized solar cells (DSSCs), organic photovoltaics, quantum dots, and perovskite solar cells (PSCs). Among all those, PSCs are at the center of the emerging photovoltaic technology with rapid improvement in the performance within a few years of discovering the first perovskite cell. Figure 2 depicts the different types of solar cells and their developmental trend for the past 46 years, showing that the performance of the PSCs has improved dramatically during a short period.The foundation technology for PSCs is DSSCs. In 1991, O'Regan and Grätzel developed a low-cost photochemical solar cell based on a high surface area nanocrystalline TiO 2 film sensitized with dye molecule. [4] The primary concern of DSSCs is the use of liquid electrolytes, which regenerate the dye after it injects electrons into the conduction band (CB) of the working electrodes (anode), which are mainly the thin layer of the metal oxide semiconductor. The electrolyte also acts as a hole transporting material to the counter electrodes (cathode). [5] The solid-state hole conductor emerged as a replacement to minimize leakage concerns in liquid electrolyte-based DSSCs. With several modifications in the device structures, researchers are trying to synthesize efficient DSSCs. However, the low absorption coefficientIn its initial phase in 2009, the inorganic-organic hybrid perovskite solar cells (PSCs) delivered a 3.8% power conversion efficiency (PCE), which is far below the present 25.7% PCE obtained in 2022. The significant improvement of the efficiency of PSCs in such a short period has stimulated significant interest in the photovoltaic community. However, the performance of current PSCs is behind the commercially available and widely used solar cells in terms of stability and scalability. Among various commonly studied perovskite materials, methylammonium lead iodide (MAPbI 3 ) is the most widely studied. This review will focus on the common solar cell structures (mesoporo...

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NaCl doped electrochemical PEDOT:PSS layers for inverted perovskite solar cells with enhanced stability

Cited by 10 publications

References 47 publications

Electrodeposited PEDOT:PSS-Al2O3 Improves the Steady-State Efficiency of Inverted Perovskite Solar Cells

Electrodeposited PEDOT:PSS-Al2O3 Improves the Steady-State Efficiency of Inverted Perovskite Solar Cells

Review on Tailoring PEDOT:PSS Layer for Improved Device Stability of Perovskite Solar Cells

Configuration of Methylammonium Lead Iodide Perovskite Solar Cell and its Effect on the Device's Performance: A Review

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