当前位置：
X-MOL 学术
›
ACS Appl. Mater. Interfaces
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Efficiency of MAPbI3-Based Planar Solar Cell Analyzed by Its Thickness-Dependent Exciton Formation, Morphology, and Crystallinity
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-03-29 00:00:00 , DOI: 10.1021/acsami.9b01952 Yang Liu 1 , Boa Jin 2 , Hao Zhang 1 , Yuping Zhang 1 , Yonghyun Kim 2 , Chen Wang 3 , Shanpeng Wen 3 , Bin Xu 1 , Chan Im 2 , Wenjing Tian 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-03-29 00:00:00 , DOI: 10.1021/acsami.9b01952 Yang Liu 1 , Boa Jin 2 , Hao Zhang 1 , Yuping Zhang 1 , Yonghyun Kim 2 , Chen Wang 3 , Shanpeng Wen 3 , Bin Xu 1 , Chan Im 2 , Wenjing Tian 1
Affiliation
|
In spite of the impressive progresses regarding perovskite-type solar cells, a clear understanding about underlying mechanisms therein is still sparse, especially because of the absence of spatially resolved device characteristics which should be linked to exciton formation efficiency, morphology, and crystallinity being estimated as functions of positions within active layers. Here, the planar CH3NH3PbI3 (MAPbI3) perovskite solar cells (PeSCs) with ZnO as the electron-transporting layer (ETL) were fabricated. By varying the wide range of MAPbI3 active-layer thickness, we estimate their device parameters and external quantum efficiencies in addition to internal absorption spectra (Q) by means of the transfer matrix method. Furthermore, the spectrally and spatially resolved internal quantum efficiencies (IQEs) as a function of the active-layer thickness within PeSCs were calculated, and the relationship between IQE and device parameters extracted from the current–voltage (J–V) behaviors was discussed. It was found that the PeSC with MAPbI3 film thickness around 303 nm has a relatively high IQE and PCE, indicating that there is more power loss of PeSCs when the thickness of the MAPbI3 layer is either less or more than about 300 nm. Furthermore, time-resolved photoluminescence together with the thickness-dependent morphology and crystallinity of the MAPbI3 film demonstrate that there are two power loss processes in the fabricated PeSCs: one at the ZnO/MAPbI3 interface and the other in bulk. The present research is beneficial for further understanding of the fundamental physics for the PeSCs based on the ZnO ETL.
中文翻译：
基于MAPbI 3的平面太阳能电池的效率，其取决于厚度的激子形成，形态和结晶度
尽管钙钛矿型太阳能电池取得了令人瞩目的进步，但对其内在机理的清晰理解仍然很少，尤其是因为缺乏空间分辨的器件特性，应将其与激子形成效率，形貌和结晶度联系起来。活动层中位置的功能。在此，平面CH 3 NH 3碘化铅3（MAPbI 3）的钙钛矿太阳能电池（PeSCs）与ZnO作为电子输送层（ETL）的制造。通过改变MAPbI 3的广泛范围有源层厚度，除了内部吸收光谱（Q）之外，我们还通过转移矩阵法估算了它们的器件参数和外部量子效率。此外，计算了光谱和空间分辨的内部量子效率（IQE）作为PeSC中活性层厚度的函数，并讨论了IQE与从电流-电压（J - V）行为中提取的器件参数之间的关系。发现MAPbI 3膜厚度约为303 nm的PeSC具有较高的IQE和PCE，表明当MAPbI 3的厚度较大时，PeSCs的功率损耗更大层小于或大于约300nm。此外，时间分辨的光致发光以及MAPbI 3膜的厚度依赖性形态和结晶度表明，在所制造的PeSC中存在两种功率损耗过程：一种在ZnO / MAPbI 3界面处，另一种在本体中。本研究有助于进一步理解基于ZnO ETL的PeSC的基本物理原理。
更新日期：2019-03-29
中文翻译：
基于MAPbI 3的平面太阳能电池的效率，其取决于厚度的激子形成，形态和结晶度
尽管钙钛矿型太阳能电池取得了令人瞩目的进步，但对其内在机理的清晰理解仍然很少，尤其是因为缺乏空间分辨的器件特性，应将其与激子形成效率，形貌和结晶度联系起来。活动层中位置的功能。在此，平面CH 3 NH 3碘化铅3（MAPbI 3）的钙钛矿太阳能电池（PeSCs）与ZnO作为电子输送层（ETL）的制造。通过改变MAPbI 3的广泛范围有源层厚度，除了内部吸收光谱（Q）之外，我们还通过转移矩阵法估算了它们的器件参数和外部量子效率。此外，计算了光谱和空间分辨的内部量子效率（IQE）作为PeSC中活性层厚度的函数，并讨论了IQE与从电流-电压（J - V）行为中提取的器件参数之间的关系。发现MAPbI 3膜厚度约为303 nm的PeSC具有较高的IQE和PCE，表明当MAPbI 3的厚度较大时，PeSCs的功率损耗更大层小于或大于约300nm。此外，时间分辨的光致发光以及MAPbI 3膜的厚度依赖性形态和结晶度表明，在所制造的PeSC中存在两种功率损耗过程：一种在ZnO / MAPbI 3界面处，另一种在本体中。本研究有助于进一步理解基于ZnO ETL的PeSC的基本物理原理。
京公网安备 11010802027423号