Interface Engineering of Lead-Free Perovskite Quantum Dots for High-Performance Data Encryption and Ultralow UV-Light Detection

AbstractAll-inorganic CsPbI3 perovskite quantum dots have received substantial research interest for photovoltaic applications because of higher efficiency compared to solar cells using other quantum dots materials and the various exciting properties that perovskites have to offer. These quantum dot devices also exhibit good mechanical stability amongst various thin-film photovoltaic technologies. We demonstrate higher mechanical endurance of quantum dot films compared to bulk thin film and highlight the importance of further research on high-performance and flexible optoelectronic devices using nanoscale grains as an advantage. Specifically, we develop a hybrid interfacial architecture consisting of CsPbI3 quantum dot/PCBM heterojunction, enabling an energy cascade for efficient charge transfer and mechanical adhesion. The champion CsPbI3 quantum dot solar cell has an efficiency of 15.1% (stabilized power output of 14.61%), which is among the highest report to date. Building on this strategy, we further demonstrate a highest efficiency of 12.3% in flexible quantum dot photovoltaics.

Download Full-text

All-inorganic Cs2CuX4 (X = Cl, Br, and Br/I) perovskite quantum dots with blue-green luminescence

Chemical Communications ◽

10.1039/c8cc07118g ◽

2018 ◽

Vol 54 (82) ◽

pp. 11638-11641 ◽

Cited By ~ 37

Author(s):

Pan Yang ◽

Guoning Liu ◽

Badi Liu ◽

Xindi Liu ◽

Yongbing Lou ◽

...

Keyword(s):

Quantum Dots ◽

Lead Free ◽

Green Luminescence ◽

Perovskite Quantum Dots ◽

First Time

Lead-free, all-inorganic copper based perovskite Cs2CuX4 (X = Cl, Br, and Br/I) quantum dots were synthesized and investigated for the first time.

Download Full-text

In Situ Ligand Bonding Management of CsPbI 3 Perovskite Quantum Dots Enables High‐Performance Photovoltaics and Red Light‐Emitting Diodes

Angewandte Chemie International Edition ◽

10.1002/anie.202010440 ◽

2020 ◽

Vol 59 (49) ◽

pp. 22230-22237 ◽

Cited By ~ 2

Author(s):

Junwei Shi ◽

Fangchao Li ◽

Yan Jin ◽

Cheng Liu ◽

Ben Cohen‐Kleinstein ◽

...

Keyword(s):

Quantum Dots ◽

High Performance ◽

Light Emitting Diodes ◽

Red Light ◽

Light Emitting ◽

Perovskite Quantum Dots

Download Full-text

Perovskite Quantum Dots Embedded Composite Films Enhancing UV Response of Silicon Photodetectors for Broadband and Solar-Blind Light Detection

Advanced Optical Materials ◽

10.1002/adom.201800077 ◽

2018 ◽

Vol 6 (16) ◽

pp. 1800077 ◽

Cited By ~ 26

Author(s):

Mengjiao Zhang ◽

Lingxue Wang ◽

Linghai Meng ◽

Xian-Gang Wu ◽

Qinwen Tan ◽

...

Keyword(s):

Quantum Dots ◽

Composite Films ◽

Light Detection ◽

Solar Blind ◽

Perovskite Quantum Dots ◽

Uv Response

Download Full-text

Lead-free, stable, high-efficiency (52%) blue luminescent FA3Bi2Br9 perovskite quantum dots

Nanoscale Horizons ◽

10.1039/c9nh00685k ◽

2020 ◽

Vol 5 (3) ◽

pp. 580-585 ◽

Cited By ~ 14

Author(s):

Yalong Shen ◽

Jun Yin ◽

Bo Cai ◽

Ziming Wang ◽

Yuhang Dong ◽

...

Keyword(s):

Quantum Dots ◽

Quantum Yield ◽

Room Temperature ◽

High Efficiency ◽

Blue Emission ◽

Lead Free ◽

Photoluminescence Quantum Yield ◽

Perovskite Quantum Dots ◽

First Time

Lead-free Bi-based perovskite FA3Bi2X9 (X = Cl, Br, and I) quantum dots (QDs) are synthesized for the first time at room temperature. The ligand-passivated FA3Bi2Br9 QDs exhibit blue emission at 437 nm with photoluminescence quantum yield (PLQY) up to 52%.

Download Full-text