高効率のポストフルレンの太陽電池のための光電混合マイクロ構造. 傾ける か 傾かない か
Gang Wang, Steven M Swick, Micaela Matta
1Material Science and Engineering Division , National Institute of Standards and Technology , Gaithersburg , Maryland 20899 , United States.
Journal of the American Chemical Society
|August 6, 2019
まとめ
ポリマー太陽電池 (PSC) の効率を最適化するには,ドナー-受容体の形態を調整する必要があります. ドナーポリマーの小アルキル置換剤は混合形態と電荷輸送を改善し,より高い電力変換効率 (PCE) をもたらしました.
科学分野:
- 材料科学
- オーガニック電子
- 太陽光発電
背景:
- 効率的なポリマー太陽電池 (PSC) は,最適なドナー-受容体の異質結合形態に依存しています.
- 混合物の形状を制御することは,電荷の生成と収集を強化するために不可欠です.
研究 の 目的:
- アルキル置換剤の寸法がポリマー形態学,電荷輸送,PSC性能に与える影響を調査する.
- 実験的および理論的方法を使用して,ポリマー構造と混合物の形態と装置の効率を相関させる.
主な方法:
- ITIC-Thと混合したベンゾディオフェン-ベンゾチアジアゾールドナーポリマーの実験的特徴付け.
- ポリマー構造と膜形態の分析のための分子動力学 (MD) シミュレーション.
- チャージ輸送,キャリアダイナミクス,パワー変換効率 (PCE) の分析.
主要な成果:
- アルキル置換剤の寸法は,混合物の形態学,ドメインの純度,寸法に大きな影響を与えた.
- 最小の置換素を持つポリマーは,小さな純粋ドメインに関連した最高PCE (11%) を達成しました.
- MDシミュレーションでは,アグレゲーションと膜形態に影響を与える置換剤主導のポリマー構造が明らかになった.
結論:
- ポリマーの形状とPSCの性能を制御する際の鍵となるのは,代替物の寸法です.
- 単純なエネルギーパラメータは 形態学的傾向を予測し 材料の設計を導くことができます
- 代替剤選択の戦略は,より高い効率のためにPSC材料を最適化することができます.
さらに関連する動画
関連する概念動画
Post-traumatic Stress Disorder
496
Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
496
Production Efficiency
18.2K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
18.2K
Trophic Efficiency
25.0K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
25.0K
Post-translational Translocation of Proteins to the RER
7.6K
A sizable fraction of proteins destined for ER are first synthesized in the cell cytosol and then transported across the ER membrane–a process called post-translational translocation. Similar to cotranslationally translocated proteins, these proteins also use the Sec translocon complex to enter the ER lumen.
Targeting proteins to the ER
Hsp40 and Hsp70 chaperone molecules bind the translated proteins in the cytosol to prevent their folding. The chaperone binding helps to keep the signal...
Targeting proteins to the ER
Hsp40 and Hsp70 chaperone molecules bind the translated proteins in the cytosol to prevent their folding. The chaperone binding helps to keep the signal...
7.6K
Efficiency of The Carnot Cycle
3.6K
The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
3.6K
Turnover Number and Catalytic Efficiency
20.3K
The turnover number of an enzyme is the maximum number of substrate molecules it can transform per unit time. Turnover numbers for most enzymes range from 1 to 1000 molecules per second. Catalase has the known highest turnover number, capable of converting up to 2.8×106 molecules of hydrogen peroxide into water and oxygen per second. Lysozyme has the lowest known turnover number of half a molecule per second.
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion....
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion....
20.3K


