Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
  • Women in Engineering

Disclosing the Microscopic Procedures in Perovskite Solar Cells

By Parul Gupta

Now, scientists from Japan have disclosed the physics for how a vital component of a perovskite solar cell works, a study that could result in enhanced solar cells or even newer and better substances. “The main studied have emphasized on enhancing efficacy with perovskite,” says Kazuhiro Marumoto of the University of Tsukuba. “But the microscopic procedure behind how such solar cells using perovskites work has not been completely identified.”

Solar cells function by transforming light energy into electricity. When a photon hits the perovskite, for instance, it knocks an electron loose. The empty spot vacated from the electron is known as hole and functions as a positively charged particle. The subsequent movement of the holes and electrons is what generated electronic current.

Since the perovskite itself does not regulate the movement of holes very well, solar cells need an extra layer of a hole transport substance to facilitate the flow of current. One common hole transport substance is a compound known as spiro-OMeTAD. To augment the current even more, scientists supplemented a lithium salt known as LiTFSI to spiro-OMeTAD. This procedure is known as ‘doping.’

Spiro-OMeTAD is an amorphous substance that delivers some unique properties. Most of the solid substances have well – defined electrical energy bands in which electrons, as well as holes, can move to transport through the substance. Crystals, for instance, often possess band structures that enable for a symmetric flow of both holes and electrons. But amorphous substances do not.

Because of the asymmetric band structure, holes can have an intricate time traveling through an amorphous substance as they can get trapped in a specific energy level. But, according to the theory, doping spiro-OMeTAD with LiTFSI prevents the trapping of holes.

Couples of electrons occupy each energy level in spiro-OMeTAD. But when LiTFSI is introduced, one of such electrons is eradicated, leaving behind a hole in its place. The presence of such hole prevents other holes from getting stuck as such high energy level, enabling them to move freely and produce electrical current.

Conventionally, no one has confirmed this procedure. But Marumoto and his team members have now employed spin resonance spectroscopy to reveal that this mechanism is responsible for enhancing the potential of spiro-OMeTAD to supply current.

ESR spectroscopy identifies the spin of single, unpaired electrons that is what is prepared when spiro-OMeTAD is doped with LiTFSI. In studies without light, the scientists identified that the number of electron spins in spiro-OMeTAD augmented by two orders of magnitude after getting doped. To identify how doping affects the efficacy of a perovskite OMeTAD solar cells, the scientists then performed their studies on the two substances layered together with the lights on.


Filed Under: News
Tagged With: Research
 

Questions related to this article?
👉Ask and discuss on EDAboard.com and Electro-Tech-Online.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


Featured Tutorials

  • Introduction to Brain Waves & its Types (Part 1/13)
  • Understanding NeuroSky EEG Chip in Detail (Part 2/13)
  • Performing Experiments with Brainwaves (Part 3/13)
  • Amplification of EEG Signal and Interfacing with Arduino (Part 4/13)
  • Controlling Led brightness using Meditation and attention level (Part 5/13)
  • Control Motor’s Speed using Meditation and Attention Level of Brain (Part 6/13)

Stay Up To Date

Newsletter Signup

Sign up and receive our weekly newsletter for latest Tech articles, Electronics Projects, Tutorial series and other insightful tech content.

EE Training Center Classrooms

EE Classrooms

Recent Articles

  • Key factors to optimize power consumption in an embedded device
  • EdgeLock A5000 Secure Authenticator
  • How to interface a DS18B20 temperature sensor with MicroPython’s Onewire driver
  • Introduction to Brain Waves & its Types (Part 1/13)
  • An Embedded Developer’s Perspective on IOT (Internet of Things)

Most Popular

5G 555 timer circuit 8051 ai Arduino atmega16 automotive avr bluetooth dc motor display Electronic Part Electronic Parts Fujitsu ic infineontechnologies integratedcircuit Intel IoT ir lcd led maximintegratedproducts microchip microchiptechnology Microchip Technology microcontroller microcontrollers mosfet motor powermanagement Raspberry Pi remote renesaselectronics renesaselectronicscorporation Research samsung semiconductor sensor software STMicroelectronics switch Technology vishayintertechnology wireless

RSS EDABOARD.com Discussions

  • Dynamic power consumption.
  • Limits of duty cycle for ICM7555 IC?
  • pmos folded cascode vs nmos folded cascode for LDO
  • Pic 16f877A Hex file
  • Need help to choose accelerometer

RSS Electro-Tech-Online.com Discussions

  • Help wanted to power an AC120v induction motor ( edited from Brushless motor - thank you @SHORTBUS= )
  • How does a NOAC work?
  • Need help working with or replacing a ferrite tube
  • Trying to make a custom automated water container for my UV purifier. Can anyone help with where to begin?
  • Funny Images Thread!
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • About Us
  • Contact Us
  • Advertise

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
  • Women in Engineering