About what I hope to major in the future by Anthony Hwang https://padlet.com/dghkddnjswn/dghkddnjswn 30935 황원주 주제 : Department of Materials Science and Engineering -Energy Materials and Devices [Theme] Dye-sentisized Solar Cell en-us 2018-05-18 02:35:00 UTC 2025-09-26 11:58:41 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Basketball.png A dye-sensitized solar cell (DSSC, DSC, DYSC[1] or Grätzel cell) is a low-cost solar cell belonging to the group of thin film solar cells. It is based on a semiconductor formed between a photo-sensitized anode and an electrolyte, a photoelectrochemical system. The modern version of a dye solar cell, also known as the Grätzel cell, was originally co-invented in 1988 by Brian O'Regan and Michael Grätzel at UC Berkeley and this work was later developed by the aforementioned scientists at the École Polytechnique Fédérale de Lausanne until the publication of the first high efficiency DSSC in 1991.Michael Grätzel has been awarded the 2010 Millennium Technology Prize for this invention. dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896158 https://en.wikipedia.org/wiki/Dye-sensitized_solar_cell]]> 2018-06-20 04:53:26 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896158 dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896319 2018-06-20 04:55:19 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896319 dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896365 Principle of how Dye-sentisized Solar cell works]]> 2018-06-20 04:55:48 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896365 박막을 이용한 태양전지 개발은 많은 진전이 있었으며 실용화를 위해서 많은 연구가 계속되고 있다. 반면에 나노구조 소재를 이용한 태양전지 연구는 기초연구단계로서 광-전기 변환효율이 매우 떨어진다. 하지만 진공용기에서 고온 증착을 하는 기존 태양전지에 비해서 적은 비용과 적은 에너지를 소모한다. 전세계에서연간 사용되는 에너지는 20 TW (20 × 1012 watt)로 추산된다. 소비되는 모든 에너지를 10% 효율의 태양전지로 대체하려 한다면 대략 남한면적의 4배 이상의 면적이 필요하다. 진공 및 CVD를 기반으로 하는 기존 태양전지 생산 기술로는 석유고갈이 예상되는 수십 년 내에 이러한 면적을 대체하기가 어려울 것으로 예측하고 있다. 이러한 점을 감안할 때 태양전지의 효율 뿐만 아니라 생산성 까지 고려한 새로운 개념의 태양전지 개발이 필요하다.태양전지는 구성하는 물질에 따라 실리콘, 화합물반도체와 같은 무기소재로 이루어진 태양전지, 유기물질을 포함하고 있는 유기 태양전지(유기 태양전지는 염료감응형 태양전지(dye-sensitized solar cell)와 유기분자접합형(organic D-A)태양전지 포함)로 나눌 수 있다. 태양전지를 구성하는 물질에 따른 분류 외에 태양전지 구조에 따른 분류를 할 수 있는데, 이 경우 태양전지는 크게 3가지로 분류될 수 있다: 웨이퍼구조(벌크 실리콘 태양전지), 박막구조(화합물 태양전지, 유기폴리머 태양전지 등). 광전기화학구조(염료감응 태양전지). 그림 9에 다양한 태양전지의 구조를 나타내었다. 특히 염료감응 태양전지는 나노소재를 이용하여 극대화된 표면적을갖는 필름의 표면에 광흡수층인 유기염료를 흡착하는 기술을 이용하고 있다. dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896493 http://nanotube.korea.ac.kr/?page_id=2196]]> 2018-06-20 04:57:48 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896493 dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896530 Differences between P-N junction solar cell and Dye-sentisized solar cell.
        ]]> 2018-06-20 04:58:15 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267896530 dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267913545 For this "What I hope to do in the future" project, I came to realize several things. The reason I searched about this solar cell was the science experiment camp, which I had an experiment of dye-sentisized solar cell. With sequential order, I made it with teammates, and test its efficiency. However, the result was not satisfying because it didn't produce any electricity. So I wanted to investigate it more for this chance. Also, Material Engineering that I hope to study one year later has a curriculum researching on Energy devices. That's why i decided to look for dye-sentisized solar cell.

]]> 2018-06-20 08:09:45 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267913545 dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267913824
As this material's key point is Dye-sentisized, like its name, I realized that processing of positioning of Dye(?) is a lot important in order to maximize energy efficiency. Thankfully now I know why I couldn't produce electricity when I made it in school. I had a problem that I didn't spread paste(which has role of dye) and had no idea of connect circuit of it.
 For this chance, I came to know about Dye-sentisized solar cell detail and solve my long time curiosity. After I study hard on material Engineering to be as expert, I want to research of this Dye-sensitized solar cell more detail.

As  I enter to university i hope to be, I'm going to lay the ground about material engineering . Thereafter, I want to make myself more specialized in Ceramics, Electronic materials, poymers. Then It'll be possible for me to make better performance meterial and new materials, then contribute to human development.]]> 2018-06-20 08:12:34 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267913824 As I enter to university i hope to be, I'm going to lay the ground about material engineering . Thereafter, I want to make myself more specialized in Ceramics, Electronic materials, poymers. Then It'll be possible for me to make better performance meterial and new materials, then contribute to human development. dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267915974 2018-06-20 08:31:05 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/267915974 Feedback from TheZoo noneofyou2 https://padlet.com/dghkddnjswn/dghkddnjswn/wish/268671114 As this material's key point is Dye-sentisized, like its name, I realized that processing of positioning of Dye(?) is a lot important in order to maximize energy efficiency of solar cell. [By increasing my understanding on Dye-sentisized Solar Cell through doing research about it) 와 같이 추가 하여서 자신이 공부한 것을 구체적으로 명시해주세요~ 앞서 수집한 자료들을 쭉 요약할 수 있겠지요? ]Thankfully now I know (realized) why I couldn't produce electricity when I made it in school. I had a problem that I didn't spread paste(which has role of dye) and had no idea of connect circuit of it.

염료 감응형 태양전지 (천연 염료로 태양전지의 효율을 높혀주는 기술)]]> 2018-06-27 01:47:00 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/268671114 When I did spread the paste on the solar cell in experiment, I thought spreading just make better efficiency to it. However, I found that this spreaded Dye helps the solar cell make the electrons. I realized that the reason why Dye should have been spreaded well is It has to be chemically attached to the surface of the cell for dye particles to make electron well with light. For this chance I could increase my understanding on Dye-sentisized Solar cell and some attitudes i have tto take during the experiment. https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269522085 2018-07-06 01:45:19 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269522085 My goal to be a Material and Science Engineer (수정 후) dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269730012
After I enter to university in which I hope to be, I'm going to lay the ground about material engineering, such as Calculus, Physics and Chemistry. Thereafter, I want to make myself specialized in energy devices. I'm going to research What features of some materials make the better movement of electron or ion.  Also, I'm gonna study detail of basic concepts and definitions of Electrochemistry and Kinetics. It will help me understand well about Battery, Fuel cell, Solar cell, White LED and so on. After then, it would be able for me to applicate my knoweldge to any energy devices and do a research of making the better materials.]]> 2018-07-09 11:55:19 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269730012 Experiment video dghkddnjswn https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269730975 2018-07-09 12:09:41 UTC https://padlet.com/dghkddnjswn/dghkddnjswn/wish/269730975