半導(dǎo)體納米線太陽(yáng)能電池中的光傳輸與效率研究

17500字 45頁(yè)

摘要 隨著我們對(duì)能源需求的不斷增加，太陽(yáng)能以其清潔性、安全性、資源充足性以及潛在的經(jīng)濟(jì)性越來(lái)越受到人們的重視，太陽(yáng)能光伏器件的研究也成為了學(xué)術(shù)領(lǐng)域的研究熱點(diǎn)。由于半導(dǎo)體納米線具有優(yōu)異的電子輸運(yùn)特性、卓越的化學(xué)穩(wěn)定性以及優(yōu)異的光學(xué)性能等，可以實(shí)現(xiàn)在納米線太陽(yáng)能電池等多種納米電子器件的應(yīng)用。因此，如何提高半導(dǎo)體納米線太陽(yáng)能電池的光電轉(zhuǎn)換效率仍然是我們研究的熱點(diǎn)和重點(diǎn)。本文簡(jiǎn)要介紹了納米線的光學(xué)特性，太陽(yáng)能電池的重要性能參數(shù)，緊接著描述了近些年半導(dǎo)體納米線的研究進(jìn)展。本文在前人的研究基礎(chǔ)上，分析了不同幾何結(jié)構(gòu)的磷化銦和砷化銦納米線太陽(yáng)能電池的電磁性能。通過(guò)解決磷化銦和砷化銦納米線太陽(yáng)能電池的特征值計(jì)算來(lái)確定波的傳播以及源問(wèn)題。給出了半導(dǎo)體納米線太陽(yáng)能電池的光散射、傳播以及吸收的變化規(guī)律，說(shuō)明了納米線太陽(yáng)能電池的吸收特性是由其結(jié)構(gòu)的色散關(guān)系決定的。同時(shí)也說(shuō)明了2D 波導(dǎo)模態(tài)有效性的分析方法是一種估算更高要求的 3D 分析結(jié)果的方法。

關(guān)鍵詞 納米線 半導(dǎo)體 太陽(yáng)能電池 光傳輸



Optical transmission and Efficiency of semiconductor nanowires solar cells

Abstract: With the increasing demand for renewable energy, solar energy has got continuous attention for the clean, safe, abundant features and the potential of the economy. The studying of solar photovoltaic devices has also become a focus of academic research in scientific community. As the semiconductor nanowires have excellent electron transport properties, excellent chemical stability and excellent optical properties, those properties can be used in a variety of nano-electronic devices and nanowire solar cells. Therefore, improving the photoelectric conversion efficiency of the semiconductor nanowires-based solar cells is the key issue of our work. This thesis reviews the optical properties of the nanowires, and some important parameters of solar cells followed by a description of the recent research progress on semiconductor nanowires. In this work, based on the previous reported studies, the electromagnetic properties of different geometrical indium phosphide and indium arsenide nanowire solar cells have been analyzed systematically. And the wave propagation is determined by solving the eigenvalue problem of the source of indium phosphide and indium arsenide nanowire solar cell. We give the semiconductor nanowires of solar cell light scattering and absorption variation of the propagation. The work illustrates that the absorption properties of the nanowire solar cell structure is determined by the dispersion relation. It also describes the 2D modal analysis method to estimate the effectiveness of the waveguide is a result of higher demand for 3D analysis method.

Key words: Nanowires Semiconductor Solar cells Optical transmission


目 錄

第一章: 緒論
1.1 納米線………………………………………………………………………..1
1.1.1 納米線的定義...........................……………………….................................1
1.1.2 納米線的波導(dǎo)特性…………………….…………………………………...1
1.2 太陽(yáng)能電池………………………………………………………………..…..2
1.2.1 太陽(yáng)能電池的定義及工作原理…………………………………………....2
1.2.2 表征太陽(yáng)能電池的重要性能參數(shù)………………………………………....3
1.3 半導(dǎo)體納米線的研究進(jìn)展…………………………………………………....6
1.4本論文的主要內(nèi)容…………………………………………………………….9
第二章: 半導(dǎo)體納米線太陽(yáng)能電池的特性……………………………..............11
2.1 半導(dǎo)體納米線的光吸收特性…………………………………………............11
2.2 半導(dǎo)體納米線的減反射特性…………………………………........................13
2.3半導(dǎo)體納米線的光色散特性.............................................................................14
2.4 半導(dǎo)體納米線的電子輸運(yùn)特性........................................................................17
第三章:半導(dǎo)體納米線太陽(yáng)能電池的色散以及波傳輸效率的理論分析.................................................................................................................................19
3.1 光場(chǎng)的計(jì)算.........................................................................................................20
3.1.1 三維有限元的模擬.........................................................................................20
3.1.2 二維波導(dǎo)仿真.................................................................................................21
3.2 詳細(xì)的平衡計(jì)算.................................................................................................24
3.3 討論……………………………………………………….…………………....25
3.4總結(jié)與展望..........................................................................................................37
致謝………………………………………………………………………………….39
參考文獻(xiàn)………………………………………………………………………….....40