Preparation of Single-Phase Films of CH3NH3Pb(I1-x,Brx)3 with Sharp Optical Band Edges

被引：398

作者：

Sadhanala, Aditya ^{[1
]}

Deschler, Felix ^{[1
]}

Thomas, Tudor H. ^{[1
]}

Dutton, Sian E. ^{[1
]}

Goedel, Karl C. ^{[1
]}

Hanusch, Fabian C. ^{[2
]}

Lai, May L. ^{[1
]}

Steiner, Ullrich ^{[1
]}

Bein, Thomas ^{[2
]}

Docampo, Pablo ^{[2
]}

Cahen, David ^{[3
]}

Friend, Richard H. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Munich, D-81377 Munich, Germany

[3] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2014年 / 5卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

SOLAR-CELLS; PEROVSKITE; EFFICIENCY; TRIHALIDE; EMERGENCE;

D O I：

10.1021/jz501332v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Organometallic lead-halide perovskite-based solar cells now approach 18% efficiency. Introducing a mixture of bromide and iodide in the halide composition allows tuning of the optical bandgap. We prepare mixed bromide-iodide lead perovskite films CH3NH3Pb(I1-xBrx)(3) (0 <= x <= 1) by spin-coating from solution and obtain films with monotonically varying bandgaps across the full composition range. Photothermal deflection spectroscopy, photoluminescence, and X-ray diffraction show that following suitable fabrication protocols these mixed lead-halide perovskite films form a single phase. The optical absorption edge of the pure triiodide and tribromide perovskites is sharp with Urbach energies of 15 and 23 meV, respectively, and reaches a maximum of 90 meV for CH3NH3PbI1.2Br1.8. We demonstrate a bromide-iodide lead perovskite film (CH3NH3PbI1.2Br1.8) with an optical bandgap of 1.94 eV, which is optimal for tandem cells of these materials with crystalline silicon devices.

引用

页码：2501 / 2505

页数：5

共 21 条

[1]

[Anonymous], EFF CHART

[2] Low-temperature processed meso-superstructured to thin-film perovskite solar cells [J].

Ball, James M. ;

Lee, Michael M. ;

Hey, Andrew ;

Snaith, Henry J. .

ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (06) :1739-1743

[3] Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance [J].

De Wolf, Stefaan ;

Holovsky, Jakub ;

Moon, Soo-Jin ;

Loeper, Philipp ;

Niesen, Bjoern ;

Ledinsky, Martin ;

Haug, Franz-Josef ;

Yum, Jun-Ho ;

Ballif, Christophe .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (06) :1035-1039

[4] High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors [J].

Deschler, Felix ;

Price, Michael ;

Pathak, Sandeep ;

Klintberg, Lina E. ;

Jarausch, David-Dominik ;

Higler, Ruben ;

Huettner, Sven ;

Leijtens, Tomas ;

Stranks, Samuel D. ;

Snaith, Henry J. ;

Atatuere, Mete ;

Phillips, Richard T. ;

Friend, Richard H. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (08) :1421-1426

[5] Chloride Inclusion and Hole Transport Material Doping to Improve Methyl Ammonium Lead Bromide Perovskite-Based High Open-Circuit Voltage Solar Cells [J].

Edri, Eran ;

Kirmayer, Saar ;

Kulbak, Michael ;

Hodes, Gary ;

Cahen, David .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (03) :429-433

[6] High Open-Circuit Voltage Solar Cells Based on Organic-Inorganic Lead Bromide Perovskite [J].

Edri, Eran ;

Kirmayer, Saar ;

Cahen, David ;

Hodes, Gary .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2013, 4 (06) :897-902

[7] Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells [J].

Eperon, Giles E. ;

Stranks, Samuel D. ;

Menelaou, Christopher ;

Johnston, Michael B. ;

Herz, Laura M. ;

Snaith, Henry J. .

ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (03) :982-988

[8]

Green MA, 2014, NAT PHOTONICS, V8, P506, DOI [10.1038/nphoton.2014.134, 10.1038/NPHOTON.2014.134]

[9] Effect of Ga content on defect states in CuIn1-xGaxSe2 photovoltaic devices [J].

Heath, JT ;

Cohen, JD ;

Shafarman, WN ;

Liao, DX ;

Rockett, AA .

APPLIED PHYSICS LETTERS, 2002, 80 (24) :4540-4542

[10] Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9% [J].

Kim, Hui-Seon ;

Lee, Chang-Ryul ;

Im, Jeong-Hyeok ;

Lee, Ki-Beom ;

Moehl, Thomas ;

Marchioro, Arianna ;

Moon, Soo-Jin ;

Humphry-Baker, Robin ;

Yum, Jun-Ho ;

Moser, Jacques E. ;

Graetzel, Michael ;

Park, Nam-Gyu .

SCIENTIFIC REPORTS, 2012, 2

← 1 2 3 →