| 3 | 1/1 | 返回列表 |
| 查看: 657 | 回復(fù): 2 | |||
| 本帖產(chǎn)生 1 個(gè) 翻譯EPI ,點(diǎn)擊這里進(jìn)行查看 | |||
nuptsww木蟲 (小有名氣)
|
[求助]
求翻譯 如下段落 (Google 的不要)
|
||
|
Process 3 in OPVCs requires that exciton dissociation across the organic–organic interface into free charge carriers is stable, and that recombination of carriers is inhibited. In optimized donor–acceptor material pairs (e.g. polythiophene and C60), charge transfer across the interface happens on a picosecond timescale, thus giving rise to the often-achieved high efficiency of OPVCs fabricated with polythiophene and C60 derivatives. The most important parameter governing stable charge transfer is the energy-level offset at the organic–organic heterojunction, that is, of “type II”, which should exceed several tenths of an electron volt for the valence bands (HOMOs) and conduction bands (LUMOs), respectively. Many organic–organic interfaces seem to follow the simple Schottky–Mott limit at the interface,thus enabling the estimation of energylevel diagrams by assuming a common vacuum level. However, there are examples where this model fails, and it is still a challenge to derive a coherent understanding of the mechanisms that govern organic–organic interface energetics. Yet another important issue regarding charge separation involves the possible formation of exciplexes (from geminate electron– hole pairs) across the polymer–polymer interface and exciton regeneration, which was deduced from electric-field- and temperature- dependent transient spectroscopy. It was suggested that this effect could be suppressed by a modest increase of intermolecular distances (few nanometers) or reduced electron– phonon coupling of the organic materials. |
木蟲 (職業(yè)作家)
秋天不會(huì)冷
|
你好,希望我的翻譯對(duì)你有所幫助,有什么翻譯不對(duì)的地方,請(qǐng)多包涵! 在OPVCs中的過程3要求:穿過有機(jī)-有機(jī)界面的激子分離到自由電荷的載體是穩(wěn)定的,并且這種結(jié)合是不可避免的。在充分利用供體-受體材料對(duì)的過程中,穿過界面的電荷轉(zhuǎn)移在皮秒的時(shí)間尺度內(nèi)發(fā)生了,因此提高了由聚噻吩和C60衍生物制備的OPVCs的效率。影響電荷轉(zhuǎn)移穩(wěn)定性的最重要的參數(shù)是在有機(jī)-有機(jī)異質(zhì)結(jié)上的能級(jí)抵消,它是“type II”,能夠分別超過價(jià)帶和導(dǎo)帶的電子伏的幾秒。許多有機(jī)-有機(jī)界面看起來遵循了在界面上的Schottky–Mott 的限制,因此可以通過假定一個(gè)真空能級(jí)來估計(jì)它的能級(jí)圖。然而,也有例子證明這個(gè)模型并不是完全適用的,并且,以得出一套機(jī)制控制有機(jī)有機(jī)界面能量學(xué)連貫的理解機(jī)制仍然是一個(gè)挑戰(zhàn)。然而,另一個(gè)重要的關(guān)于電荷分離的問題涉及的激發(fā)復(fù)合體(從成雙的電子-空穴對(duì))在高分子聚合物界面和激子的再生的可能的形成機(jī)制,它 可以從電子場(chǎng)-和溫度依賴的瞬態(tài)光譜中推導(dǎo)出來。可能的形成機(jī)制表明:通過 分子間距離(幾個(gè)納米尺寸)或者有機(jī)材料還原的電子-光子耦合的適度增加可以抑制這種效應(yīng)。 |
鐵桿木蟲 (著名寫手)
|
供參考: 在OPVC的過程3需要 橫跨有機(jī) - 有機(jī)界面進(jìn)入自由載流子的激子解離是穩(wěn)定的,并且載流子的再結(jié)合受到抑制。在優(yōu)化的供體-受體材料對(duì)(如噻吩和C60 )中 ,通過該接口的電荷轉(zhuǎn)移發(fā)生在皮秒時(shí)間尺度,因此,用噻吩和C60衍生物制造的OPVC往往實(shí)現(xiàn)了高效率?刂品(wěn)定電荷轉(zhuǎn)移的最重要參數(shù)是在在有機(jī) - 有機(jī)異質(zhì)結(jié),也就是 “ Ⅱ型”的能量電平偏移,這應(yīng)該分別超過十分之幾電子伏特伏的價(jià)帶( HOMO能級(jí))和導(dǎo)帶( LUMO能級(jí))。許多有機(jī) - 有機(jī)界面似乎遵循簡(jiǎn)單的Schottky–Mott限制,從而使通過假設(shè)一個(gè)共同的真空水平來估計(jì)能量水平圖成為可能。不過,也有這種利用模式失敗的例子,對(duì)有機(jī) - 有機(jī)界面能量控制機(jī)制推導(dǎo)出一個(gè)公認(rèn)的理解仍然是一個(gè)挑戰(zhàn)。然而,電荷分離方面的另一個(gè)重要問題涉及到可能形成的激基復(fù)合物(來自成雙的電子 - 空穴對(duì))跨越聚合物 - 聚合物界面和從電場(chǎng)和溫度依賴的瞬態(tài)譜推斷的激子再生。有人建議通過適度增加分子間的距離(幾個(gè)納米)或降低有機(jī)材料的電子 - 聲子耦合來抑制這種影響。 |
| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 材料求調(diào)劑一志愿哈工大324 +4 | 閆旭東 2026-03-28 | 5/250 |
|
|---|---|---|---|---|
|
[考研] 一志愿上海理工能源動(dòng)力(085800)310分求調(diào)劑 +3 | zhangmingc 2026-03-27 | 4/200 |
|
|
[考研] 一志愿南師大0703化學(xué) 275求調(diào)劑 +4 | Ripcord上岸 2026-03-27 | 4/200 |
|
|
[考研] 材料與化工(0856)304求B區(qū)調(diào)劑 +7 | 邱gl 2026-03-27 | 7/350 |
|
|
[考研] 考研化學(xué)308分求調(diào)劑 +10 | 你好明天你好 2026-03-23 | 12/600 |
|
|
[考研] 321求調(diào)劑 +4 | 璞玉~~ 2026-03-25 | 4/200 |
|
|
[考研] 調(diào)劑推薦 +5 | 清酒714 2026-03-26 | 6/300 |
|
|
[考研] 材料求調(diào)劑 +5 | .m.. 2026-03-25 | 5/250 |
|
|
[考研] 276求調(diào)劑。有半年電池和半年高分子實(shí)習(xí)經(jīng)歷 +10 | 材料學(xué)257求調(diào)劑 2026-03-23 | 11/550 |
|
|
[考研]
|
鐘llll 2026-03-26 | 4/200 |
|
|
[考研] 317求調(diào)劑 +7 | 蛋黃咸肉粽 2026-03-26 | 7/350 |
|
|
[考研] 341求調(diào)劑 +7 | 青檸檬1 2026-03-26 | 7/350 |
|
|
[考研] 325求調(diào)劑 +3 | Aoyijiang 2026-03-23 | 3/150 |
|
|
[考研] 279求調(diào)劑 +6 | 紅衣隱官 2026-03-21 | 6/300 |
|
|
[考研]
|
平樂樂樂 2026-03-26 | 4/200 |
|
|
[考研] 機(jī)械學(xué)碩310分,數(shù)一英一,一志愿211本科雙非找調(diào)劑信息 +3 | @357 2026-03-25 | 3/150 |
|
|
[考研] 347求調(diào)劑 +4 | L when 2026-03-25 | 4/200 |
|
|
[基金申請(qǐng)] 請(qǐng)教下大家 2026年國(guó)家基金申請(qǐng)是雙盲審嗎? +3 | lishucheng1 2026-03-22 | 5/250 |
|
|
[考研] 328求調(diào)劑 +4 | LHHL66 2026-03-23 | 4/200 |
|
|
[考研] 一志愿南大,0703化學(xué),分?jǐn)?shù)336,求調(diào)劑 +3 | 收到VS 2026-03-21 | 3/150 |
|