What is the effective encapsulation technique to protect organic - inorganic hybrid perovskite material form exposure to moisture and oxygen?

Mohammed Muye Haruna @Mohammed-Haruna-11

18 June 2023 1 5K Report

Joshua Depiver

Organic-inorganic hybrid perovskite materials are promising for various applications, particularly solar cells, due to their excellent light absorption and charge transport properties. However, these materials are also sensitive to environmental conditions, primarily moisture and oxygen, which can degrade their performance over time.

Several encapsulation techniques have been developed to protect perovskite materials from environmental degradation:

Physical Encapsulation: This is the most straightforward method, where the perovskite layer is physically sealed off from the environment with a protective layer. This can be done using materials like glass, metal, or polymers. Typically, an adhesive or sealant is used to secure the protective layer and ensure no gaps are present where moisture or oxygen could penetrate.

Thin Film Coatings: Special thin film coatings can be deposited onto the perovskite surface to provide protection. These could include layers of metal oxides (like Al2O3 or SiO2), organic polymers, or other materials. These coatings can be applied to atomic layer deposition (ALD) or chemical vapour deposition (CVD).

Hydrophobic Coating: Coating the perovskite layer with a hydrophobic material can help repel water and reduce moisture-related degradation. For instance, some research has shown that fullerene derivatives can provide hydrophobic properties and enhance the moisture resistance of perovskite solar cells.

Incorporation of Additives or Passivation Layers: Certain additives can be included in the perovskite layer to improve stability. For instance, alkylammonium ions have been used to enhance the moisture stability of perovskite materials. Additionally, passivation layers can reduce defect sites and improve the stability and efficiency of perovskite solar cells.

Use of Barrier Films: High-quality barrier films, often made from multiple layers of different materials, can provide very effective encapsulation. These films can adhere to the perovskite layer using a suitable encapsulant, which can also help absorb any moisture penetrating the barrier film.

Ultimately, the optimal choice of encapsulation technique will depend on the specific perovskite material and the intended application. The encapsulation method must also be compatible with the rest of the device fabrication process.

Badges
Science topic

More Mohammed Muye Haruna's questions See All

What are the values needed for gabor filter's parameter for cifar10 data?

Hi, I implemented a code to gabor filter cifar10 data but the images after being filtered and stacked are not clear like the original images. I think the problem is in the way I am using the...

03 March 2021 6,317 1 View

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 2 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

What kind of food stuff increase the potentiality of human brain?

There are different kinds of food stuffs which we intake daily according to our requirements. Carbohydrate, protein, fat, mineral, vitamin, water are mainly working for the growth and development...

01 March 2021 831 2 View

How to calculate the annealing temperature of a primer pair?

I have to amplify a gene and my primers just reached. The Tm for Forward primer is 64.2, and that of reverse primer is 65.5. Can some one suggest how to get the best annealing temperature? Thanks...

01 March 2021 360 7 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

Is the a way to contol flow (Flow velocity) without impacting pressure value?

I have a pipe with 10 mm in Diameter and 2 bar pressure, the fluid velocity is 200 m/s, the fluid is air. is there a way to reduce velocity without affecting the pressure value?

25 February 2021 7,187 3 View

Amorphous silica XRD peak at around 10 degree?

21 February 2021 3,417 5 View

Can anyone suggest a topic for the Impact of AI and ML in the financial institutions?

I am currently doing my Master Thesis in FinTech and I am thinking of doing my project on the impact of AI and ML on the financial industry but as the impact of these technologies on the industry...

21 February 2021 7,128 3 View

Where I can find materials to learn Fuzzy VIKOR methodology?

Please suggest ways to learn Fuzzy VIKOR methodology in a best possible way. And is there any toolkit available for the same? Thank you in advance.

20 February 2021 8,271 3 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Which fluorescent dye to use for measuring total ROS production?

Is DCFDA appropriate for measuring total ROS production, or can it only detect certain types of ROS? If I want to measure total ROS production, which dye should I use?

01 March 2021 9,447 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

How can we use a hybrid element in Abaqus Dynamic/Explicit for impressible materials?

Hi, all! How can we use a hybrid element in Abaqus Dynamic/Explicit for impressible materials? I have not find the choice for explicit element in Abaqus CAE. I am wondering whether it is possible...

25 February 2021 9,936 2 View

Has anyone succeeded in capturing uranium atoms in a fullerene structure?

Additional questions are: What are the encapsulating atoms? How difficult was the process and what rates were achieved? What factors most seriously affect the economics?

20 February 2021 3,134 5 View

Mixture neutralization after Boc deprotection ?

I am performing a Boc-deprotection with HCl in organic solvent (dioxane or Ethylacetate) but would like to isolate the free amine. Several problems: - Neutralizing with inorganic base as NEt3...

18 February 2021 3,366 3 View

Where would? can? positive charge(vacancy) be when grounded?

Hello I plasma(H2N2) treated Al2O3 plate (edge is connected to ground) and wondered if oxygen vacancy migration on the plate can occurs as electrons escape through edge. Or whatever positive...

15 February 2021 8,118 1 View

ZnS oxidizes to ZnO!!why??

when I put my ZnS solution in the chemical bath, the ZnS oxidizes so there are ZnO peaks appearing because of the reaction with the oxygen in the air, despite the fact that I close the beaker...

14 February 2021 5,778 9 View

Ligands with 3,4,5-trihydroxyphenyl group?

Hi In the design of a bidentate ligand with imine group, is it okay to have a 3,4,5-trihydroxyphenyl group in the structure? In other words, does the 3,4,5-trihydroxyphenyl group compete with...

08 February 2021 4,977 7 View

How to prepare OH- terminated Si Wafer?

Hi, Folks. I am working on the ALD project to deposit Al2O3 on the Si wafer from TMA and Water. I have struggled with the preparation of OH- terminated Si wafer. I have both Si(1 0 0) and...

08 February 2021 8,792 2 View