Highly photo-stable CsPbI3 perovskite quantum dots via thiol ligand exchange and their polymer film application

Seungmin Baek; Yongjin Kim; Sang-Wook Kim

Journal of Industrial and Engineering Chemistry, Vol.83, 279-284, March, 2020

DOI10.1016/j.jiec.2019.11.038 Export Citation

Highly photo-stable CsPbI3 perovskite quantum dots via thiol ligand exchange and their polymer film application

Seungmin Baek, Yongjin Kim, and Sang-Wook Kim^†

Nanomaterials Laboratory, Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea

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Highly photo-stable CsPbI3 perovskite quantum dots (PeQDs) were prepared using thiol as an exchanged ligand. Among the CsPbX3 PeQDs, CsPbI3 with common capping ligands such as oleic acid (OA) and oleylamine (OLA) was particularly unstable and the optical properties were readily degraded because of its structural instability. To overcome these problems, thiol (-SH) as an exchanged ligand was used to stabilize the structure and could maintain the structural and optical properties. The synthesized CsPbI3 exhibited highly improved photo-stability under ultraviolet (365 nm) irradiation by ligand exchange from OA and OLA to thiol. As an application, perovskite films were fabricated using the PeQDs and a cyclic olefin copolymer (COC). The thiol-treated PeQD films exhibited higher stability than the untreated films under irradiation with a blue light-emitting diode (LED).

Keywords:Ligand exchange;Thiol-capped CsPbI3 perovskite quantum;dots;Photo-stability;QD films

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[2] Lee J, Kim D, Kim H. Seo S, Cho SM, Park N, Adv. Eng. Mater., 5, 150131 (2015)

[3] Yang WS, Park BW, Jung EH, Jeon NJ, Kim YC, Lee DU, Shin SS, Seo J, Kim EK, Noh JH, Seok SI, Science, 356(6345), 1376 (2017)

[4] Saliba M, CorreaBaena J, Wolff CM, Stolterfoht M, Phung N, Albrecht S, Neher D, Abate A, Chem. Mater., 30, 4193 (2018)

[5] Protesescu L, Yakunin S, Bodnarchuk MI, Krieg F, Caputo R, Hendon CH, Yang RX, Walsh A, Kovalenko MV, Nano Lett., 15, 3692 (2015)

[6] Hoffman JB, Schleper AL, Kamat PV, J. Am. Chem. Soc., 138(27), 8603 (2016)

[7] Nedelcu G, Protesescu L, Yakunin S, Bodnarchuk MI, Grotevent MJ, Kovalenko MV, Nano Lett., 15, 5635 (2015)

[8] Chen O, Zhao J, Chauhan VP, Cui J, Wong C, Harris DK, Wei H, Han HS, Fukumura D, Jain RK, Bawendi MG, Nat. Mater., 12(5), 445 (2013)

[9] Peng XG, Schlamp MC, Kadavanich AV, Alivisatos AP, J. Am. Chem. Soc., 119(30), 7019 (1997)

[10] Chen HW, Zhu RD, He J, Duan W, Hu W, Lu YQ, Li MC, Lee SL, Dong YJ, Wu ST, Light Sci. Appl., 6, e17043 (2017)

[11] Jiang Y, Cho S, Shim M, J. Mater. Chem. C Mater., 6, 2618 (2018)

[12] Li J, Xu L, Wang T, Song J, Chen J, Xue J, Dong Y, Cai B, Shan Q, Han B, Adv. Mater., 29, 160388 (2017)

[13] Panfil YE, Oded M, Banin U, Angew. Chem.-Int. Edit., 57, 4274 (2018)

[14] Dou L, Yang YM, You J, Hong Z, Chang W, Li G, Yang Y, Nat. Commun., 5, 5404 (2014)

[15] Li CL, Han C, Zhang YB, Zang ZG, Wang M, Tang XS, Du JH, Sol. Energy Mater. Sol. Cells, 172, 341 (2017)

[16] Sun H, Lei T, Tian W, Cao F, Xiong J, Li L, Small, 13, 170104 (2017)

[17] Li YJ, Lv YC, Zou CL, Zhang W, Yao JN, Zhao YS, J. Am. Chem. Soc., 138(7), 2122 (2016)

[18] Yakunin S, Protesescu L, Krieg F, Bodnarchuk MI, Nedelcu G, Humer M, De Luca, Fiebig M, Heiss W, Kovalenko MV, Nat. Commun., 6, 8056 (2015)

[19] Yu J, Chen X, Wang Y, Zhou H, Xue M, Xu Y, Li Z, Ye C, Zhang J, Van Aken PA, J. Mater. Chem. C Mater., 4, 7302 (2016)

[20] Dong X, Fang X, Lv M, Lin B, Zhang S, Ding J, Yuan N, J. Mater. Chem. A Mater.

[21] Ruan L, Shen W, Wang A, Xiang A, Deng Z, J. Phys. Chem. Lett., 8, 3853 (2017)

[22] Wang F, Yu H, Xu HH, Zhao N, Adv. Funct. Mater., 25(7), 1120 (2015)

[23] Wang C, Chesman AS, Jasieniak JJ, Chem. Commun., 53, 232 (2017)

[24] Li N, Zhu Z, Chueh C, Liu H, Peng B, Petrone A, Li X, Wang L, Jen AK, Adv. Eng. Mater., 7, 160130 (2017)

[25] Yao JS, Ge J, Wang KH, Zhang GZ, Zhu BS, Chen C, Zhang Q, Luo Y, Yu SH, Yao HB, J. Am. Chem. Soc., 141(5), 2069 (2019)

[26] Liu ZK, Bekenstein Y, Ye XC, Nguyen SC, Swabeck J, Zhang DD, Lee ST, Yang PD, Ma WL, Alivisatos AP, J. Am. Chem. Soc., 139(15), 5309 (2017)

[27] Ruan L, Shen W, Wang A, Zhou Q, Zhang H, Deng Z, Nanoscale, 9, 7252 (2017)

[28] Zillner E, Fengler S, Niyamakom P, Rauscher F, Kohler K, Dittrich T, J. Phys. Chem. C, 116, 16747 (2012)

[29] Luo YR, Comprehensive Handbook of Chemical bond energies, CRC Press, Boca Raton, FL, 2007.

[30] Brutti S, Balducci G, Gigli G, Mass Spectrom., 21, 89 (2007)

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