scholarly journals Effect of Modulating Spin-Coating Rate of TiO2Precursor for Mesoporous Layer onJ-VHysteresis of Solar Cells with Polar CH3NH3PbI3Perovskite Thin Film

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Qi Li ◽  
Xiaoping Zou ◽  
Yuanyuan Li ◽  
Yaxian Pei ◽  
Shuangxiong Zeng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Phase Angle ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Piezoresponse Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Phase Images ◽  
Reverse Scan

Compared with the crystalline Si solar cells, theJ-Vcharacteristics of CH3NH3PbI3perovskite solar cells are different under forward and reverse scan, and the CH3NH3PbI3film exhibits some polarization properties. To explore those performances of the mesoporous TiO2layer based perovskite solar cells, we focus on the effect of modulating the spin-coating rate of the TiO2precursor for mesoporous layer onJ-Vhysteresis of solar cells with the polar film byJ-Vcurves, atomic force microscopy topographic images, and piezoresponse force microscopy phase images. Firstly, the AFM images illustrate that the polarization behaviors exist and the deformation scale is large at the corresponding position when the DC bias voltage increases. Secondly, it is suggested that the polar films which applied the positive DC biases voltage show a tendency to 0° phase angle, while the polar films which applied the negative DC biases voltage show a tendency to −180° phase angle. Thirdly, a weak polar hysteresis loop relation for CH3NH3PbI3film was observed. Finally, the hysteresis index for the 1500 rpm mesostructured solar cell shows relatively lowJ-Vhysteresis compared with the 3000 rpm mesostructured and the planar-structured solar cell. Our experimental results bring novel routes for reducing the hysteresis and investigating the polar nature for CH3NH3PbI3material.

Electrochemical and atomic force microscopy investigations of the effect of CdS on the local electrical properties of CH3NH3PbI3:CdS perovskite solar cells

2017 ◽  
Vol 5 (46) ◽  
pp. 12112-12120 ◽  
Author(s):  
Mingxuan Guo ◽  
Fumin Li ◽  
Lanyu Ling ◽  
Chong Chen
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Electrochemical Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Bulk Heterojunction ◽  
Perovskite Solar Cells ◽  
Kelvin Probe ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force

The effect of the incorporated CdS on the local optoelectronic properties of CH3NH3PbI3:CdS bulk heterojunction (BHJ) perovskite solar cells (PSCs) are studied using Kelvin probe force microscopy (KPFM), conductive atomic force microscopy (c-AFM) and electrochemical impedance spectroscopy (EIS).

scholarly journals Fabrication of low cost perovskite solar cell under ambient conditions using only spin coating deposition method

2018 ◽  
Vol 67 ◽  
pp. 01022 ◽  
Author(s):  
Michael Hariadi ◽  
Istighfari Dzikri ◽  
Retno Wigajatri Purnamaningsih ◽  
Nji Raden Poespawati
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Spin Coating ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Deposition Method ◽  
Ambient Conditions ◽  
Coating Deposition ◽  
Cost Constraints

Indonesia is an archipelagic nation that has many small islands where the average load is low and currently supplied by diesel power generators. The drawbacks from these generators are cost constraints from its operation. Solar cells are the solution of this problem with the support of daily average radiation in Indonesia of 4.8 kWh/m2/day. There has been a lot of technology for the construction of solar cells such as silicon based, copper indium gallium selenide (CIGS), which was already successfully commercialized. However, these technologies have been obsolete and started to reach its maximum potential. Perovskite solar cells have a very high future potential, due to the increase on the efficiency of this technology in a relatively short amount of time. The current challenge for the fabrication of perovskite solar cell is the material cost and fabrication cost. This paper discussed the low-cost fabrication of perovskite solar cell using only spin coating deposition method and relatively also low-cost materials for the structure of the perovskite solar cell itself. As a result, we achieve perovskite solar cell with VOC of 0.6 V, ISC of 13 mA, FF of 0.28, and 1.2% efficiency.

scholarly journals Improved Electrical and Structural Stability in HTL-Free Perovskite Solar Cells by Vacuum Curing Treatment

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3953
Author(s):  
Salvatore Valastro ◽  
Emanuele Smecca ◽  
Salvatore Sanzaro ◽  
Filippo Giannazzo ◽  
Ioannis Deretzis ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Structural Stability ◽  
Perovskite Solar Cells ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hole Transporting ◽  
Top Contact ◽  
Proper Material

Device engineering with proper material integration into perovskite solar cells (PSCs) would extend their durability provided a special care is spent to retain interface integrity during use. In this paper, we propose a method to preserve the perovskite (PSK) surface from solvent-mediated modification and damage that can occur during the deposition of a top contact and furtherly during operation. Our scheme used a hole transporting layer-free top-contact made of Carbon (mostly graphite) to the side of hole extraction. We demonstrated that the PSK/graphite interface benefits from applying a vacuum-curing step after contact deposition that allowed mitigating the loss in efficiency of the solar devices, as well as a full recovery of the electrical performances after device storage in dry nitrogen and dark conditions. The device durability compared to reference devices was tested over 90 days. Conductive atomic force microscopy (CAFM) disclosed an improved surface capability to hole exchange under the graphite contact after vacuum curing treatment.

scholarly journals Performance of perovskite solar cell coated with graphene oxide as hole transport layer

2021 ◽  
Vol 1 (12 (109)) ◽  
pp. 36-43
Author(s):  
Rustan Hatib ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Nurkholis Hamidi
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Solar Cell ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Degree Of Crystallinity ◽  
Hole Transport Layer ◽  
Photoelectric Properties

Organic metal halide perovskite has recently shown great potential for applications, as it has the advantages of low cost, excellent photoelectric properties, and high power conversion efficiency. The Hole Transport Material (HTM) is one of the most critical components in Perovskite Solar Cells (PSC). It has the function of optimizing the interface, adjusting the energy compatibility, and obtaining higher PCE. The inorganic p-type semiconductor is an alternative HTM due to its chemical stability, higher mobility, increased transparency in the visible region, and general valence band energy level (VB). Here we report the use of the Graphene Oxide (GO) layer as a Hole Transport Layer (HTL) to improve the perovskite solar cells' performance. The crystal structure and thickness of GO significantly affect the increase in solar cell efficiency. This perovskite film must show a high degree of crystallinity. The configuration of the perovskite material is FTO/NiO/GO/CH3NH3PbI3/ZnO/Ag. GO as a Hole Transport Layer can increase positively charged electrons' mobility to improve current and voltage. As a blocking layer that can prevent recombination. The GO can make the perovskite interface layer with smoother holes, and molecular uniformity occurs to reduce recombination. The method used in this study is by using spin coating. In the spin-coating process, the GO layer is coated on top of NiO with variations in the rotation of 700 rpm, 800 rpm, 900 rpm, 1,000 rpm, and 1,500 rpm. The procedure formed different thicknesses from 332.5 nm, 314.7 nm, 256.4 nm, 227.4 to 204.5 nm. The results obtained at a thickness of 227.4 nm reached the optimum efficiency, namely 15,3 %. Thus, the GO material as a Hole Transport Layer can support solar cell performance improvement by not being too thick and thin

Enhanced performance via partial lead replacement with calcium for a CsPbI3 perovskite solar cell exceeding 13% power conversion efficiency

2018 ◽  
Vol 6 (14) ◽  
pp. 5580-5586 ◽  
Author(s):  
Cho Fai Jonathan Lau ◽  
Xiaofan Deng ◽  
Jianghui Zheng ◽  
Jincheol Kim ◽  
Zhilong Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Partial Replacement ◽  
Reverse Scan

Partial replacement of Pb in CsPbI3 perovskite solar cells with Ca enhances power conversion efficiency to 13.5% under reverse scan (stabilised at 13.3%), without sacrificing stability.

scholarly journals Performance and Stability Comparison of Low-Cost Mixed Halide Perovskite Solar Cells: CH3NH3PbI3- x Cl x and CH3NH3PbI3- x SCN x

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Nji Raden Poespawati ◽  
Junivan Sulistianto ◽  
Tomy Abuzairi ◽  
Retno Wigajatri Purnamaningsih
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Spin Coating ◽  
High Performance ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Cell Stability ◽  
Stability Measurement ◽  
Halide Perovskite

Perovskite solar cell is categorized as a third-generation solar cell which is used for its high-performance and low-cost production. However, device stability is a major problem in the development of perovskite solar cells. Mixed halide perovskite is one of the subjects that have been proposed to improve perovskite solar cell stability. Research about solar cells using mixed halide perovskite is widely reported. However, complex configurations and fabrication using sophisticated equipment were usually used in those reported studies. In this work, the fabrication of solar cells using mixed halide perovskite CH3NH3PbI3- x Cl x and CH3NH3PbI3- x SCN x was conducted using a simple and low-cost structure. Solution-processed deposition fabrication method using spin coating was used to fabricate the devices. Optimization of the spin coating rate for each layer in the perovskite solar cells was performed to ensure that the devices exhibited decent performance. Stability measurement and analysis of the perovskite solar cells were conducted. Summarily, solar cells with mixed halide perovskite CH3NH3PbI3- x Cl x exhibit the highest performance with an efficiency of 2.92%. On the other hand, solar cell with mixed halide perovskite CH3NH3PbI3- x SCN x has the best stability which only drops its efficiency by 39% from its initial value after 13 days.

scholarly journals Non-Fullerene Small Molecule Electron-Transporting Materials for Efficient p-i-n Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1082
Author(s):  
Da-Seul Choi ◽  
Sung-Nam Kwon ◽  
Seok-In Na
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Internal Resistance ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
The Many ◽  
Low Coverage

PC61BM is commonly used in perovskite solar cells (PSC) as the electron transport material (ETM). However, PC61BM film has various disadvantages, such as its low coverage or the many pinholes that appear due to its aggregation behavior. These faults may lead to undesirable direct contact between the metal cathode and perovskite film, which could result in charge recombination at the perovskite/metal interface. In order to overcome this problem, three alternative non-fullerene electron materials were applied to inverted PSCs; they were evaluated on suitability as electron transport layers. The roles and effects of these non-fullerene ETMs on device performance were studied using photoluminescence (PL) measurements, field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), internal resistance in PSC measurements, and conductive atomic force microscopy (C-AFM). It was found that one of the tested materials, IT-4f, showed excellent electron extraction ability and was associated with reduced recombination. The PSC with IT-4f as the ETM produced better cell-performance; it had an average PCE of 11.21%, which makes it better than the ITIC and COi8DFIC-based devices. Finally, IT-4f was compared with PC61BM; it was found that the two materials have quite comparable efficiency and stability levels.

Modified deposition process of electron transport layer for efficient inverted planar perovskite solar cells

2015 ◽  
Vol 51 (43) ◽  
pp. 8986-8989 ◽  
Author(s):  
Hua Dong ◽  
Zhaoxin Wu ◽  
Bin Xia ◽  
Jun Xi ◽  
Fang Yuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Vapor Deposition ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Deposition Process ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Electron Transport Layer

A highly-efficient inverted heterojunction perovskite solar cell is reported, with a double-layer PCBM film deposited by sequential spin-coating/vapor deposition as the electron transport layer.

scholarly journals Synthesis and optimization of properties of thin films of FAx(MA1-X)PbI3grown by spin coating with perovskite structure to be used as active layer in hybrid solar cells

2020 ◽  
Vol 19 (1) ◽  
pp. 87-93
Author(s):  
Gerardo Gordillo-Guzmán ◽  
Ophyr Virgüez-Amaya ◽  
Camilo Otálora-Bastidas ◽  
Clara Calderón-Triana ◽  
César Quiñones-Segura
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Spin Coating ◽  
Morphological Properties ◽  
Hybrid Solar Cells ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
One Step

This work report results concerning the effect that the substitution of the methylammonium cation by the formamidinium cation causes on the properties of FAx(MA1-x)PbI3films synthesized by spin coating in one step. For that, it was conducted a study to establish the influence of the composition of the FAx(MA1-x)PbI3films on their optical, structural and morphological properties, determined through spectral transmittance, atomic force microscopy and X-ray diffraction measurements. Correlating parameters of synthesis with results of the study of properties performed, we were able to get conditions to grow FAx(MA1-x)PbI3films with improved optical gap, microstructure and morphology, what allows to think that this compound is suitable to be used as the active layer in hybrid solar cells.

Sign in / Sign up

Export Citation Format

Share Document