High voltage vacuum-processed perovskite solar cells with organic semiconducting interlayers

Babaei, Azin; Dreeßen, Chris; Sessolo, Michele; Bolink, Henk J.

doi:10.1039/d0ra00214c

Cited by 16 publications

(15 citation statements)

References 48 publications

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“…Moreover, a faster decay in the efficiency was observed when the PCE was recorded for 12 h under 1 sun illumination. For the devices with the other two ratios (A and B), the PCE and stability were comparable and in line with existing results on planar devices in which they used the same p-i-n configuration, [42] showing around 20% loss in efficiency after 12 h continuous MPP tracking. However, statistically ( Figure S5, Supporting Information), for the solar cells type A, a larger spread of the values was noted.…”

Section: Resultssupporting

confidence: 89%

Fully Vacuum‐Processed Perovskite Solar Cells on Pyramidal Microtextures

et al. 2020

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Solar cells based on metal halide perovskites have attracted tremendous attention due to the rapid increase in performance of single junctions and tandem solar cells. Recently, highest perovskite/silicon tandem efficiencies are realized with front‐side polished silicon wafers or adapted microstructure of textured silicon solar cells. One way to integrate perovskite top cells on typical micrometer‐sized pyramidal structures, is conformal vacuum‐based perovskite deposition. Herein, fully vacuum‐based perovskite solar cells are developed on top of random pyramidal microtextured glass substrates with a pyramid size up to 9 μm. This method allows improvement of the light management of the textured perovskite solar cell and resembles the typical pyramid topography of silicon solar cells as a step toward monolithic tandem integration. Moreover, to improve the quality of the perovskite on the textured substrates, three different methylammonium lead iodide (MAPbI3) films are tested by adjusting the rate ratio of the precursors. Optimized ratios for textured substrates with higher PbI2 rates enable a transient photoluminescence decay time above 0.75 μs approaching that of planar substrates at around 1.2 μs. Finally, a efficiency over 15% is achieved, which is, to the best of our knowledge, the first reported device on microscopically textured glass by co‐evaporated ion.

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Section: Resultssupporting

confidence: 89%

Fully Vacuum‐Processed Perovskite Solar Cells on Pyramidal Microtextures

et al. 2020

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“…21,22 Since the demonstration of the first thermally evaporated methylammonium lead mixed halide (iodide/chloride) perovskite solar cell, 23 most of the research on evaporated perovskite solar cells focused on methylammonium lead triiodide (MAPbI 3 ). [24][25][26][27][28][29] It had been recognised already at the early stages of research that evaporation of methylammonium iodide (MAI) is difficult to control and to perform reproducibly, 30 prompting researchers to explore other, MA-free, perovskite compositions for thermal evaporation. Borchert et al reported on the evaporation of formamidinium lead triiodide (FAPbI 3 ) perovskite layers, reaching a PCE of 14.2%.…”

Section: Introductionmentioning

confidence: 99%

Thermally evaporated methylammonium-free perovskite solar cells

Zhang

Cho

et al. 2020

J. Mater. Chem. C

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“…Thin BCP films as buffer layers can be processed through vacuum or solution. Although there are various number of studies based on BCP layers processed through vacuum [24][25][26][27], the number of studies on solution processed BCP layers is rather limited [28][29][30][31]. In this work, we studied the effect of BCP layers on the performance of perovskite solar cells by changing the BCP concentration, which was prepared by sol-gel method and also, we have studied the effect of spin-coating speed of BCP layers on the performance of perovskite solar cells in p-i-n configuration as ITO/NiOx/MAPbI3/PCBM/BCP/Ag configuration (Fig.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bathocuproine Concentration on the Photovoltaic Performance of NiOx-Based Perovskite Solar Cells

et al. 2021

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Abstract. Bathocuproine (BCP) (2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline) is a well-known material that is employed as a hole-blocking layer between electron transport layer (ETL) and metal electrode in perovskite solar cells. It has been demonstrated that the use of BCP as a buffer layer between the ETL and the metal electrode in perovskite solar cells is highly beneficial. In literature, BCP is coated using vacuum processing techniques. Vacuum processing techniques require more energy and cost-effective processing conditions. In this work, we used BCP layers processed through wet processing techniques using sol-gel method with different concentrations. We achieved a short circuit current density (Jsc) of 16.1 mA/cm2 and an open circuit voltage (Voc) of 875 mV were acquired and a fill factor (FF) of 0.37 was calculated for perovskite solar cells without a BCP layer leading to a power conversion efficiency (PCE) of 5.32 % whereas Jsc of 19 mA/cm2, Voc of 990 mV were achieved and a FF of 0.5 was calculated for perovskite solar cells employing BCP layers with concentration of 0.5 mg/ml and spin cast at 4000 rpm, leading to a PCE of 9.4 %. It has been observed that the use of a BCP layer with an optimized concentration led to an improved device performance with an increase of 77 % in PCE in ambient air under high humidity conditions for planar structure perovskite solar cells in the configuration of ITO/NiOx/MAPbI3/PCBM/BCP/Ag. Resumen. Batocuproina (BCP) (2,9-dimetil-4,7-difenil-1,10-fenantrolina) es un material que se emplea como capa de bloqueo de huecos entre la capa transportadora de electrones (ETL) y el electrodo metálico en celdas solares basados en perovskitas. Se ha demostrado que el uso de BCP como capa amortiguadora entre el ETL y el electrodo metálico en las celdas solares de perovskita es beneficioso. Comúnmente el BCP se recubre mediante técnicas de procesamiento al vacío, las cuales requieren altos costos energéticos. En este trabajo utilizamos capas de BCP procesadas mediante técnicas de procesamiento húmedo utilizando el método sol-gel. Logramos una densidad de corriente de cortocircuito (Jsc) de 16.1 mA / cm2 y un voltaje de circuito abierto (Voc) de 875 mV y se calculó un factor de llenado (FF) de 0.37 para las celdas solares de perovskita sin una capa de BCP lo que conduce a una eficiencia de conversión de energía (PCE) de 5.32%. Para celdas solares de perovskita que emplean capas de BCP con concentración de 0.5 mg/ml y centrifugado a 4000 rpm el valor de Jsc fue de 19 mA / cm2, se lograron Voc de 990 mV y se calculó un FF de 0.5, lo que lleva a un PCE del 9,4%. Se observó que el uso de una capa de BCP con concentración optimizada puede conducir a un rendimiento mejorado del dispositivo con un aumento del 77% en PCE en el aire ambiente, en condiciones de alta humedad, para celdas solares de perovskita de estructura plana en la configuración de ITO / NiOx / MAPbI3 / PCBM / BCP / Ag.

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High voltage vacuum-processed perovskite solar cells with organic semiconducting interlayers

Abstract: The effect of n-type interlayers and electrodes on the voltage and stability of fully vacuum-deposited perovskite solar cells is evaluated.

Cited by 16 publications

References 48 publications

Fully Vacuum‐Processed Perovskite Solar Cells on Pyramidal Microtextures

Fully Vacuum‐Processed Perovskite Solar Cells on Pyramidal Microtextures

Thermally evaporated methylammonium-free perovskite solar cells

Effect of Bathocuproine Concentration on the Photovoltaic Performance of NiOx-Based Perovskite Solar Cells

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