Solar cell and method for manufacturing the same
AssigneeIndustrial Technology Research Institute
InventorsChia-Hua LEE, Hung-Ru HSU, Yung-Tsung LIU, Shu-Nung CHANG, Song-Yeu TSAI, Fu-Ming LIN
Life of this patent
Estimating the term…
Abstract
Disclosed is a solar cell including a first electrode, a second electrode, and a first conversion layer disposed therebetween. The first electrode is closer to a light incident side than the second electrode. The first conversion layer is a composition-gradient perovskite. A part of the first conversion layer adjacent to the first electrode has an energy gap less than that of a part of the first conversion layer adjacent to the second electrode.
Claims8
A method of manufacturing a solar cell, comprising:
- providing m parts by mole of M1X12 by a first deposition source, providing 1-m parts by mole of M2X22 by a second deposition source, and providing a fixed amount of a fixed amount of AX1tX2(1−t) by a third deposition source to deposit a first conversion layer on a first electrode, wherein the first conversion layer is a composition-gradient perovskite;
- and
- forming a second electrode on the first conversion layer,
- wherein a part of the first conversion layer adjacent to the first electrode has an energy gap lower than that of a part of the first conversion layer adjacent to the second electrode,
- wherein the first conversion layer has a composition of M1mM2(1−m)AX1(2m+t)X2(3−2m−t), m is decreased with a longer deposition time, t is decreased with a longer deposition time, 1≧m≧0, and 1≧t≧0;
- wherein each of M1 and M2 is independently a divalent cation of Ge, Sn, or Pb,
- wherein A is a monovalent cation of methylammonium, ethylammonium, or formamidinium,
- wherein each of X1 and X2 is independently a monovalent anion of halogen,
- wherein M1 has a lower atomic number than M2, X1 has a higher atomic number than X2, or a combination thereof.
A method of manufacturing a solar cell, comprising:
- providing m parts by mole of M1X12 by a first deposition source and providing 1-m parts by mole of M2X22 by a second deposition source to deposit a M1mM2(1−m)X12mX2(2−2m) layer on a first electrode;
- providing AX1 or AX2 by a third deposition source, such that AX1 or AX2 reacts with the M1mM2(1−m)X12mX2(2−2m) layer to form a first conversion layer on the first electrode, wherein the first conversion layer is a composition-gradient perovskite of M1mM2(1−m)AX1(2m+1)X2(2−2m) or M1mM2(1−m)AX1(2m)X2(3−2m);
- and
- forming a second electrode on the first conversion layer,
- wherein a part of the first conversion layer adjacent to the first electrode has an energy gap lower than that of a part of the first conversion layer adjacent to the second electrode,
- wherein m is decreased with a longer deposition time and 1≧m≧0;
- wherein each of M1 and M2 is independently a divalent cation of Ge, Sn, or Pb,
- wherein A is a monovalent cation of methylammonium, ethylammonium, or formamidinium,
- wherein each of X1 and X2 is independently a monovalent anion of halogen,
- wherein M1 has a lower atomic number than M2, X1 has a higher atomic number than X2, or a combination thereof.
Dependencies are inferred from the claim text.