Electron-hole liquid formation in formamidinium lead bromide perovskite FAPbBr3

被引：2

作者：

Ammirati, Giuseppe ^{[1
,2
]}

Catone, Daniele ^{[1
]}

O'Keeffe, Patrick ^{[3
]}

Toschi, Francesco ^{[1
]}

Turchini, Stefano ^{[1
]}

Matteocci, Fabio ^{[2
]}

Barichello, Jessica ^{[2
]}

Di Carlo, Aldo ^{[1
,2
]}

Martelli, Faustino ^{[4
]}

机构：

[1] CNR, ISM, Ist Struttura Mat, EuroFEL Support Lab EFSL, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, CHOSE, I-00133 Rome, Italy

[3] CNR, ISM, Ist Struttura Mat, EuroFEL Support Lab EFSL, I-00015 Monterotondo, Italy

[4] CNR, Ist Microelettron & Microsistemi IMM, I-00133 Rome, Italy

来源：

PHYSICAL REVIEW B | 2023年 / 108卷 / 19期

关键词：

MOTT TRANSITION; METHYLAMMONIUM; CONDENSATION; EXCITONS; DIAMOND; SI;

D O I：

10.1103/PhysRevB.108.195201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We observe radiative recombination from an electron-hole liquid (EHL) in a thin film of FAPbBr3, a metal halide perovskite used in transparent photovoltaics and light emitters. Photoluminescence (PL) at low excitation intensity and low temperatures only shows the free-exciton (FE) signal. As the excitation intensity increases, two additional signals in PL emerge: the electron-hole plasma (EHP) and the EHL recombination bands. For both the FE-EHP and the EHP-EHL phase transitions, a critical carrier density is established and a phase diagram is presented.

引用

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