亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Role of π-conjugated-length-regulated perovskite intergrain interconnecting in the photovoltaic performance of perovskite solar cells

钙钛矿(结构) 材料科学 共轭体系 磁滞 钝化 化学工程 纳米技术 结晶学 化学 物理 聚合物 复合材料 工程类 图层(电子) 量子力学
作者
Peng Cheng,Xuefeng Xia,Xiaofeng Wang,Jiayi Peng,Zhiping Fan,Fan Li
出处
期刊:Applied Surface Science [Elsevier BV]
卷期号:585: 152670-152670 被引量:6
标识
DOI:10.1016/j.apsusc.2022.152670
摘要

• The role of π-conjugated-length-regulated intergrain interconnecting in the photovoltaic performance of CH 3 NH 3 PbI 3 inverted planar perovskite solar cells is demonstrated. • The introduction of bilateral dicarboxyic acid additives with the biphenyl group (BPDA) can effectively control the crystal growth of perovskites, passivate defects/traps and tighten the interconnecting of perovskite grains. • The devices with BPDA achieved high PCE increased to 20.87% along with negligible hysteresis and excellent moisture stability. Despite great advancements in perovskite solar cells (PSCs), the unsatisfactory intergrain interconnecting in polycrystalline perovskite films remains a challenge to be addressed. Herein, three bilateral dicarboxyic acids, i.e. suberic acid (SA), p-phthalic acid (PTA) and biphenyl dicarboxylic acid (BPDA), are employed as additives to uncover the role of π-conjugated-length-regulated intergrain interconnecting in PSCs. Benefiting from strong interactions between two-sided carboxyl groups and perovskites, incorporation of these additives can control crystal growth, passivate defects/traps and tighten the interconnecting of perovskite grains. Moreover, thanks to the large π-electron delocalization and π-π interactions, introduction of π-conjugated additives (i.e. PTA and BPDA) can evidently intensify the preferred orientation of perovskite crystals and improve the carrier transport between perovskite grains. Especially, by extending π-conjugated structure to biphenyl groups (i.e. BPDA), high-quality perovskite films exhibiting large and ordered grains with vertically columnar alignment, along with strong electrical intergrain interconnecting, are obtained. Moreover, the intrinsic hydrophobicity nature of π-conjugated structures is helpful for improving the moisture stability. Eventually, the champion efficiency of 20.87% is acquired with negligible hysteresis and excellent moisture stability for PSCs with BPDA. Our work demonstrates that the π-conjugated length of additives can play a vital role in regulating the intergrain interconnecting.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
blenx完成签到,获得积分10
刚刚
南工问天完成签到,获得积分10
19秒前
35秒前
38秒前
42秒前
张雷应助南工问天采纳,获得20
44秒前
科研通AI2S应助李治稳采纳,获得10
45秒前
51秒前
螺蛳粉入侵元宇宙完成签到,获得积分10
55秒前
56秒前
南工问天给南工问天的求助进行了留言
59秒前
汉堡包应助太清采纳,获得10
1分钟前
疯狂的泥猴桃完成签到,获得积分20
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
Hayat应助科研通管家采纳,获得10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
1分钟前
拾光完成签到,获得积分10
1分钟前
大个应助背后梦安采纳,获得10
1分钟前
华仔应助lf采纳,获得10
1分钟前
1分钟前
打打应助Lucille采纳,获得10
1分钟前
testmanfuxk完成签到,获得积分10
1分钟前
lf发布了新的文献求助10
1分钟前
1分钟前
1分钟前
Lucille发布了新的文献求助10
1分钟前
2分钟前
2分钟前
2分钟前
杨涵完成签到 ,获得积分10
2分钟前
2分钟前
2分钟前
2分钟前
量子星尘发布了新的文献求助10
2分钟前
俭朴蜜蜂完成签到 ,获得积分10
2分钟前
2分钟前
2分钟前
2分钟前
伯赏元彤发布了新的文献求助10
2分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976649
求助须知:如何正确求助?哪些是违规求助? 3520735
关于积分的说明 11204672
捐赠科研通 3257497
什么是DOI,文献DOI怎么找? 1798716
邀请新用户注册赠送积分活动 877897
科研通“疑难数据库(出版商)”最低求助积分说明 806629