HgTe Nanocrystal-Based Photodiode for Extended Short-Wave Infrared Sensing with Optimized Electron Extraction and Injection

光电二极管 光电子学 二极管 材料科学 带隙 堆栈(抽象数据类型) 红外线的 钙钛矿(结构) 光电效应 锑化镓 光学 物理 化学 超晶格 计算机科学 程序设计语言 结晶学
作者
Charlie Gréboval,Eva Izquierdo,Claire Abadie,Adrien Khalili,Mariarosa Cavallo,Audrey Chu,Tung Huu Dang,Huichen Zhang,X. Lafosse,Michaël Rosticher,Xiang Xu,Armel Descamps‐Mandine,Abdelkarim Ouerghi,Mathieu G. Silly,Sandrine Ithurria,Emmanuel Lhuillier
出处
期刊:ACS applied nano materials [American Chemical Society]
卷期号:5 (6): 8602-8611 被引量:21
标识
DOI:10.1021/acsanm.2c02103
摘要

Thanks to their narrow band gap nature and fairly high carrier mobility, HgTe nanocrystals (NCs) are of utmost interest for optoelectronics beyond the telecom window (λ > 1.55 μm). In particular, they offer an interesting cost-effective alternative to the well-developed InGaAs technology. However, in contrast to PbS, far less work has been dedicated to the integration of this material in photodiodes. In the short-wave infrared region, HgTe NCs have a more p-type character than in the mid-wave infrared region, thus promoting the development of new electron transport layers with an optimized band alignment. As for perovskites, HgTe NCs present a fairly deep band gap with respect to vacuum. Thus, we were motivated by the strategy developed for perovskite solar cells, for which SnO2 has led to the best performing devices. Here, we explore the following stack made of SnO2/HgTe/Ag2Te, in which the SnO2 and Ag2Te layers behave as electron and hole extractors, respectively. Using X-ray photoemission, we show that SnO2 presents a nearly optimal band alignment with HgTe to efficiently filter the hole dark current while letting the photoelectrons flow. The obtained I–V curve exhibits an increased rectifying behavior, and the diode stack presents a high internal efficiency for the diode (above 60%) and an external quantum efficiency that is mostly limited by the absorption magnitude. Furthermore, we tackle a crucial challenge for the transfer of such a diode onto readout circuits, which prevents back-side illumination. We also demonstrate that the diode stack is reversible with a partially transparent conducting electrode on the top, while preserving the device’s responsivity. Finally, we show that such a SnO2 layer is also beneficial for electron injection and leads to an enhanced electroluminescence signal as the diode is operated under forward bias. This work is an essential step toward the design of a focal plane array with a HgTe NC-based photodiode.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
无限的易云完成签到,获得积分10
1秒前
笨笨歌曲发布了新的文献求助10
1秒前
1秒前
轩少的发布了新的文献求助10
2秒前
肥四完成签到,获得积分10
2秒前
2秒前
RLL完成签到,获得积分10
3秒前
3秒前
和谐的小懒猪完成签到 ,获得积分10
4秒前
小猪坨完成签到,获得积分10
4秒前
莫西莫西完成签到,获得积分10
5秒前
Jiayou Zhang完成签到,获得积分10
5秒前
身法马可波罗完成签到 ,获得积分10
5秒前
QH完成签到,获得积分10
5秒前
zyyin完成签到,获得积分10
6秒前
拉稀摆带发布了新的文献求助10
7秒前
善学以致用应助佩佩采纳,获得10
7秒前
脑洞疼应助linggaga采纳,获得10
7秒前
姬欢欢发布了新的文献求助10
7秒前
8秒前
高高远山完成签到,获得积分10
8秒前
漂亮茹妖完成签到,获得积分10
8秒前
汉堡包应助LL采纳,获得10
9秒前
郝宝真发布了新的文献求助10
10秒前
刘晨阳完成签到,获得积分20
11秒前
经法发布了新的文献求助10
11秒前
芳华如梦完成签到 ,获得积分10
13秒前
故意的冷之完成签到,获得积分20
13秒前
14秒前
Joshua完成签到,获得积分0
14秒前
初遇完成签到,获得积分10
16秒前
冰强完成签到 ,获得积分10
17秒前
18秒前
lhy发布了新的文献求助10
19秒前
20秒前
岁月静好Taoyi完成签到 ,获得积分10
20秒前
完美世界应助香烟小厨采纳,获得10
20秒前
21秒前
21秒前
cc爱学习完成签到,获得积分10
23秒前
高分求助中
Sustainability in Tides Chemistry 2800
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
Rechtsphilosophie 1000
Bayesian Models of Cognition:Reverse Engineering the Mind 888
Handbook of Qualitative Cross-Cultural Research Methods 600
Very-high-order BVD Schemes Using β-variable THINC Method 568
Chen Hansheng: China’s Last Romantic Revolutionary 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 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 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3137260
求助须知:如何正确求助?哪些是违规求助? 2788392
关于积分的说明 7785921
捐赠科研通 2444458
什么是DOI,文献DOI怎么找? 1299916
科研通“疑难数据库(出版商)”最低求助积分说明 625650
版权声明 601023